Lesson 04. Control Structures I : Decision Making. MIT 31043, VISUAL PROGRAMMING By: S. Sabraz Nawaz
|
|
- Delilah Manning
- 6 years ago
- Views:
Transcription
1 Lesson 04 Control Structures I : Decision Making MIT 31043, VISUAL PROGRAMMING Senior Lecturer in MIT Department of MIT Faculty of Management and Commerce South Eastern University of Sri Lanka
2 Decision Structures A control structure is a logical design that controls the order in which statements execute A sequence structure is a set of statements that execute in the order that they appear A decision structure execute statements only under certain circumstances o A specific action is performed only if a certain condition exists o Also known as a selection structure
3 A Simple Decision Structure The flowchart is a single-alternative decision structure It provides only one alternative path of execution In C#, you can use the if statement to write such structures. A generic format is: if (expression) Statements; Statements; etc.; Cold outside False True Wear a coat The expression is a Boolean expression that can be evaluated as either true or false
4 Relational Operators A relational operator determines whether a specific relationship exists between two values Operator Meaning Expression Meaning > Greater than x > y Is x greater than y? < Less than x < y Is x less than y? >= Greater than or equal to x >= y Is x greater than or equal to y? <= Less than or equal to x <= y Is x less than or equal to you? == Equal to x == y Is x equal to y?!= Not equal to x!= y Is x not equal to you?
5 Examples that use relational operators strfirstname == "Rapid" // equal to a string literal yearstextbox.text == "" // equal to an empty string strmessage == String.Empty // equal to an empty string dbldiscountpercent == 2.3 // equal to a numeric literal blnisvalid == false // equal to the false value deccode == decproductcode // equal to another variable strlastname!= "Apps" dblyears > 0 inti < intmonths // not equal to a string literal // greater than a numeric literal // less than a variable dblsubtotal >= 500 // greater than or equal to // a literal value intquantity <= intreorderpoint // less than or equal to // a variable Slide 5
6 BRANCHING Slide 6
7 BRANCHING Branching is the act of controlling which line of code should be executed next. The line to jump to is controlled by some kind of conditional statement. This conditional statement is based on a comparison between a test value and one or more possible values using Boolean logic. This section describes three branching techniques available in C#: o The ternary operator o The if statement o The switch statement Slide 7
8 The Ternary Operator The simplest way to perform a comparison is to use the ternary (or conditional) operator; this operator works on three operands. Slide 8
9 The if Statement The if statement is a far more versatile and useful way to make decisions. Unlike the ternary operator, if statements don t have a result (so you can t use them in assignments); instead, you use the statement to conditionally execute other statements. Slide 9
10 The if Statement The simplest use of an if statement is as follows, where <test> is evaluated (it must evaluate to a Boolean value for the code to compile) and the line of code that follows the statement is executed if <test> evaluates to true: if (sales > 50000) bonus = 500; if (sales > 50000) bonus = 500; sales > True False bonus = 500 Slide 10
11 The if / else Statement An if-else statement will execute one block of statement if its Boolean expression is true or another block if its Boolean expression is false It has two parts: an if clause and an else clause Both sections of code can span multiple lines using blocks in braces: You can also specify additional code using the else statement in combination with an if statement. This statement is executed if <test> evaluates to false: Slide 11
12 Example of if-else Statement False temp >40 True display cold display hot if (temp > 40) MessageBox.Show( hot ); else MessageBox.Show( cold );
13 Example Slide 13
14 Checking More Conditions Using if Statements You can also create a decision structure that evaluates multiple conditions to make the final decision using the if-else-if statement In C#, the generic format is: if (expression) else if (expression) else if (expression) else Slide 14
15 Checking More Conditions Using if Statements Slide 15
16 Improved Marks Processor Slide 16
17 Logical Operators The logical AND operator (&&) and the logical OR operator ( ) allow you to connect multiple Boolean expressions to create a compound expression The logical NOT operator (!) reverses the truth of a Boolean expression Operator Meaning Description && AND Both subexpression must be true for the compound expression to be true OR One or both subexpression must be true for the compound expression to be true! NOT It negates (reverses) the value to its opposite one. Expression Meaning x >y && a < b Is x greater than y AND is a less than b? x == y x == z Is x equal to y OR is x equal to z?! (x > y) Is the expression x > y NOT true?
18 Sample Decision Structures with Logical Operators The && operator if (temperature < 20 && minutes > 12) MessageBox.Show( The temperature is in the danger zone. ); The operator if (temperature < 20 temperature > 100) MessageBox.Show( The temperature is in the danger zone. ); The! Operator if (!(temperature > 100)) MessageBox.Show( The is below the maximum temperature. );
19 Nested Decision Structures You can create nested decision structures to test more than one condition. Nested means one inside another In C#, a generic format is: if (expression) if (expression) statements; else statements; else statements
20 A Sample Nested Decision Structure Salary >= Display Minimum salary requirement not met. yearsonjob >= 2 Display Minimum years at current job not met. Display You qualify for the load. End Slide 20
21 A Sample Nested Decision Structure if (salary >= 40000) else if (yearonjob >= 2) decisionlabel.text = "You qualify for the loan." else decisionlabel.text = "Minimum years at current " + "job not met." decisionlabel.text = "Minimum salary requirement " + "not met."
22 A Sample Nested Decision Structure if (strcustomertype == "R") if (dblsubtotal >= 100) decdiscountpercent =.2m; else decdiscountpercent =.1m; else // customertype isn't "R" decdiscountpercent =.4m; Slide 22
23 Example This program checks if the mark s range is above 100 or below 0 (zero). If the mark is out of range (0-100), an error message is show using the MessageBox. If it is within the range, calculation is executed. Slide 23
24 Example Slide 24
25 switch
26 The switch Multiple-Selection Statement C# provides the switch multiple-selection statement to perform different actions based on the possible values of an expression. Each action is associated with the value of a constant integral expression or a constant string expression that the variable or expression on which the switch is based may assume. A constant integral expression is any expression involving character and integer constants that evaluates to an integer value or a constant. A constant string expression is any expression composed of string literals that always results in the same string. A switch statement compares ONE variable against MULTIPLE possible values Slide 26
27 The syntax of the switch statement Supported data types: bool, char, String, integral, or enum Slide 27
28 Sample switch Statement switch (month) case 1: MessageBox.Show( January ); break; case 2: MessageBox.Show( February ); break; month case 3: MessageBox.Show( March ); break; Display January Display February Display March Display Error: Invalid month default: MessageBox.Show( Error: Invalid month ); break;
29 switch Example I: Lottory Slide 29
30 switch Example II: Month Finder Slide 30
31 A switch statement that falls through the first case label switch (strcustomertype) case "R": case "C": decdiscountpercent =.2m; break; case "T": decdiscountpercent =.4m; break; Slide 31
32 GUI Design Slide 32
33 GUI CheckBox A small area on a computer screen which, when selected by the user, shows that a particular feature has been enabled. A CheckBox control allows users to select a single or multiple options from a list of options. A typical CheckBox control has two possible states: o Checked state is when the CheckBox has check mark on o Unchecked is when the CheckBox is not checked Typically, we use a mouse to check or uncheck a CheckBox Checked property is true when a CheckBox is in checked state Slide 33
34 GUI CheckBox Slide 34
35 CheckedChanged Event Like the Click event for a button, the checkbox has CheckedChanged as its default event. The CheckedChanged event occurs when the value of the Checked property changes Slide 35
36 GUI RadioButton A RadioButton control provides a round interface to select one option from a number of options. Radio buttons are usually placed in a group on a container control such as a Panel or a GroupBox and one of them is selected. A typical RadioButton control has two possible states: o Checked state is when the button has check mark on o Unchecked is when the button is not checked Typically, we use a mouse to check or uncheck Checked property is true when a radiobutton is in checked state At a time only one radiobutton can be selected within a container Slide 36
37 GUI RadioButton Slide 37
38 GUI - PictureBox You can display images on your form by using the PictureBox control. It is a simple control which has a main purpose of displaying images. All you have to do is browse for the desired image and Visual Studio will import it to your project. You can use several image formats such as JPEG, GIF, PNG, and BMP. Properties Image ImageLocation SizeMode Description The image that will be displayed by the control. The path of the image to be displayed by the PictureBox. Tells how the image will be displayed. Slide 38
39 GUI PictureBox To display an image using the PictureBox control, there are multiple ways you can use. You can go to the Properties Window and find the Image property. Click the button to the right of it to bring out the Select Resource Dialog. Slide 39
40 GUI PictureBox Once the image is displayed, it may not look like you want it to. If the loaded image is larger the size of the PictureBox, then the image will be clipped. You can use the SizeMode property to change the way the image is positioned or resized inside the control. PictureBoxSizeMode Description Normal StretchImage AutoSize The image will be positioned in the upper-left corner of the PictureBox and if the image is larger than the PictureBox, the image will be clipped. Resizes the image to match the size of the PictureBox. Resizes the PictureBox to match the size of the image. CenterImage Zoom The image is centered inside the PictureBox. If the image is larger than the PictureBox, the image will be clipped. Fits the whole image inside the PictureBox while maintaining the image s size ratio. Slide 40
41 THANK YOU Slide 41
Decision Structures. Lecture 3 MIT 12043, Fundamentals of Programming By: S. Sabraz Nawaz
Decision Structures Lecture 3 MIT 12043, Fundamentals of Programming By: S. Sabraz Nawaz Chapter Topics o Relational Operators o The if Statement o The if-else Statement o Nested if statements o The if-else-if
More informationDecision Structures. Lesson 03 MIT 11053, Fundamentals of Programming
Decision Structures Lesson 03 MIT 11053, Fundamentals of Programming By: S. Sabraz Nawaz M.Sc. in IS (SLIIT), PGD in IS (SLIIT), BBA (Hons.) Spl. In IS (SEUSL), MIEEE, Microsoft Certified Professional
More informationControl Structures. Lecture 4 COP 3014 Fall September 18, 2017
Control Structures Lecture 4 COP 3014 Fall 2017 September 18, 2017 Control Flow Control flow refers to the specification of the order in which the individual statements, instructions or function calls
More informationFlow of Control. Flow of control The order in which statements are executed. Transfer of control
1 Programming in C Flow of Control Flow of control The order in which statements are executed Transfer of control When the next statement executed is not the next one in sequence 2 Flow of Control Control
More informationV2 2/4/ Ch Programming in C. Flow of Control. Flow of Control. Flow of control The order in which statements are executed
Programming in C 1 Flow of Control Flow of control The order in which statements are executed Transfer of control When the next statement executed is not the next one in sequence 2 Flow of Control Control
More informationChapter 2. Ans. C (p. 55) 2. Which is not a control you can find in the Toolbox? A. Label B. PictureBox C. Properties Window D.
Chapter 2 Multiple Choice 1. According to the following figure, which statement is incorrect? A. The size of the selected object is 300 pixels wide by 300 pixels high. B. The name of the select object
More informationFlow Control. CSC215 Lecture
Flow Control CSC215 Lecture Outline Blocks and compound statements Conditional statements if - statement if-else - statement switch - statement? : opertator Nested conditional statements Repetitive statements
More informationControl Structures in Java if-else and switch
Control Structures in Java if-else and switch Lecture 4 CGS 3416 Spring 2017 January 23, 2017 Lecture 4CGS 3416 Spring 2017 Selection January 23, 2017 1 / 26 Control Flow Control flow refers to the specification
More informationSoftware Design & Programming I
Software Design & Programming I Starting Out with C++ (From Control Structures through Objects) 7th Edition Written by: Tony Gaddis Pearson - Addison Wesley ISBN: 13-978-0-132-57625-3 Chapter 4 Making
More informationChapter 4: Making Decisions
Chapter 4: Making Decisions 4.1 Relational Operators Relational Operators Used to compare numbers to determine relative order Operators: > Greater than < Less than >= Greater than or equal to
More informationLesson #4. Logical Operators and Selection Statements. 4. Logical Operators and Selection Statements - Copyright Denis Hamelin - Ryerson University
Lesson #4 Logical Operators and Selection Statements Control Structures Control structures combine individual instructions into a single logical unit with one entry point at the top and one exit point
More informationChapter 4: Making Decisions
Chapter 4: Making Decisions Understanding Logic-Planning Tools and Pseudocode Decision Making A tool that helps programmers plan a program s logic by writing plain English statements Flowchart You write
More informationControl Structures in Java if-else and switch
Control Structures in Java if-else and switch Lecture 4 CGS 3416 Spring 2016 February 2, 2016 Control Flow Control flow refers to the specification of the order in which the individual statements, instructions
More informationChapter 4: Making Decisions
Chapter 4: Making Decisions CSE 142 - Computer Programming I 1 4.1 Relational Operators Relational Operators Used to compare numbers to determine relative order Operators: > Greater than < Less than >=
More informationMaking Decisions and Working with Strings
GADDIS_CH04 12/16/08 6:47 PM Page 193 CHAPTER 4 Making Decisions and Working with Strings TOPICS 4.1 The Decision Structure 4.2 The If...Then Statement 4.3 The If...Then...Else Statement 4.4 The If...Then...ElseIf
More information5. Control Statements
5. Control Statements This section of the course will introduce you to the major control statements in C++. These control statements are used to specify the branching in an algorithm/recipe. Control statements
More informationChapter 4 - Notes Control Structures I (Selection)
Chapter 4 - Notes Control Structures I (Selection) I. Control Structures A. Three Ways to Process a Program 1. In Sequence: Starts at the beginning and follows the statements in order 2. Selectively (by
More informationLECTURE 04 MAKING DECISIONS
PowerPoint Slides adapted from *Starting Out with C++: From Control Structures through Objects, 7/E* by *Tony Gaddis* Copyright 2012 Pearson Education Inc. COMPUTER PROGRAMMING LECTURE 04 MAKING DECISIONS
More informationChapter 4: Making Decisions. Copyright 2012 Pearson Education, Inc. Sunday, September 7, 14
Chapter 4: Making Decisions 4.1 Relational Operators Relational Operators Used to compare numbers to determine relative order Operators: > Greater than < Less than >= Greater than or equal to
More informationDecision Making in C
Decision Making in C Decision making structures require that the programmer specify one or more conditions to be evaluated or tested by the program, along with a statement or statements to be executed
More informationLesson 7 Part 2 Flags
Lesson 7 Part 2 Flags A Flag is a boolean variable that signals when some condition exists in a program. When a flag is set to true, it means some condition exists When a flag is set to false, it means
More information4.1. Chapter 4: Simple Program Scheme. Simple Program Scheme. Relational Operators. So far our programs follow a simple scheme
Chapter 4: 4.1 Making Decisions Relational Operators Simple Program Scheme Simple Program Scheme So far our programs follow a simple scheme Gather input from the user Perform one or more calculations Display
More informationSlide 1 CS 170 Java Programming 1 The Switch Duration: 00:00:46 Advance mode: Auto
CS 170 Java Programming 1 The Switch Slide 1 CS 170 Java Programming 1 The Switch Duration: 00:00:46 Menu-Style Code With ladder-style if-else else-if, you might sometimes find yourself writing menu-style
More informationDive Into Visual C# 2010 Express
Dive Into Visual C# 2010 Express 2 Seeing is believing. Proverb Form ever follows function. Louis Henri Sullivan Intelligence is the faculty of making artificial objects, especially tools to make tools.
More informationLecture 5 Tao Wang 1
Lecture 5 Tao Wang 1 Objectives In this chapter, you will learn about: Selection criteria Relational operators Logical operators The if-else statement Nested if statements C++ for Engineers and Scientists,
More informationChapter 4 The If Then Statement
The If Then Statement Conditional control structure, also called a decision structure Executes a set of statements when a condition is true The condition is a Boolean expression For example, the statement
More informationIntroduction to Decision Structures. Boolean & If Statements. Different Types of Decisions. Boolean Logic. Relational Operators
Boolean & If Statements Introduction to Decision Structures Chapter 4 Fall 2015, CSUS Chapter 4.1 Introduction to Decision Structures Different Types of Decisions A decision structure allows a program
More informationFollowing is the general form of a typical decision making structure found in most of the programming languages:
Decision Making Decision making structures have one or more conditions to be evaluated or tested by the program, along with a statement or statements that are to be executed if the condition is determined
More informationKingdom of Saudi Arabia Princes Nora bint Abdul Rahman University College of Computer Since and Information System CS240 BRANCHING STATEMENTS
Kingdom of Saudi Arabia Princes Nora bint Abdul Rahman University College of Computer Since and Information System CS240 BRANCHING STATEMENTS Objectives By the end of this section you should be able to:
More informationCS313D: ADVANCED PROGRAMMING LANGUAGE
CS313D: ADVANCED PROGRAMMING LANGUAGE Computer Science department Lecture 2 : C# Language Basics Lecture Contents 2 The C# language First program Variables and constants Input/output Expressions and casting
More informationConditional Statement
Conditional Statement 1 Conditional Statements Allow different sets of instructions to be executed depending on truth or falsity of a logical condition Also called Branching How do we specify conditions?
More informationDive Into Visual C# 2008 Express
1 2 2 Dive Into Visual C# 2008 Express OBJECTIVES In this chapter you will learn: The basics of the Visual Studio Integrated Development Environment (IDE) that assists you in writing, running and debugging
More informationLecture Programming in C++ PART 1. By Assistant Professor Dr. Ali Kattan
Lecture 08-1 Programming in C++ PART 1 By Assistant Professor Dr. Ali Kattan 1 The Conditional Operator The conditional operator is similar to the if..else statement but has a shorter format. This is useful
More informationChapter 2. Flow of Control. Copyright 2016 Pearson, Inc. All rights reserved.
Chapter 2 Flow of Control Copyright 2016 Pearson, Inc. All rights reserved. Learning Objectives Boolean Expressions Building, Evaluating & Precedence Rules Branching Mechanisms if-else switch Nesting if-else
More informationC++ Programming: From Problem Analysis to Program Design, Third Edition
C++ Programming: From Problem Analysis to Program Design, Third Edition Chapter 4: Control Structures I (Selection) Control Structures A computer can proceed: In sequence Selectively (branch) - making
More informationSchool of Computer Science CPS109 Course Notes 5 Alexander Ferworn Updated Fall 15
Table of Contents 1 INTRODUCTION... 1 2 IF... 1 2.1 BOOLEAN EXPRESSIONS... 3 2.2 BLOCKS... 3 2.3 IF-ELSE... 4 2.4 NESTING... 5 3 SWITCH (SOMETIMES KNOWN AS CASE )... 6 3.1 A BIT ABOUT BREAK... 7 4 CONDITIONAL
More informationConditions, logical expressions, and selection. Introduction to control structures
Conditions, logical expressions, and selection Introduction to control structures 1 Flow of control In a program, statements execute in a particular order By default, statements are executed sequentially:
More informationChapter 2. Creating Applications with Visual Basic Pearson Addison-Wesley. All rights reserved. Addison Wesley is an imprint of
Chapter 2 Creating Applications with Visual Basic Addison Wesley is an imprint of 2011 Pearson Addison-Wesley. All rights reserved. Section 2.1 FOCUS ON PROBLEM SOLVING: BUILDING THE DIRECTIONS APPLICATION
More informationFlow Charts. Visual Depiction of Logic Flow
Flow Charts Visual Depiction of Logic Flow Flow Charts Describe a sequence of events using pictures Often associated with computer programs, but are quite common in other fields General way to depict a
More informationconditional statements
L E S S O N S E T 4 Conditional Statements PU RPOSE PROCE DU RE 1. To work with relational operators 2. To work with conditional statements 3. To learn and use nested if statements 4. To learn and use
More informationChapter 3: Decision Structures
Chapter 3: Decision Structures Chapter Topics Chapter 3 discusses the following main topics: The if Statement The if-else Statement Nested if statements The if-else-if Statement Logical Operators Comparing
More informationIntroduction to Visual Basic and Visual C++ Arithmetic Expression. Arithmetic Expression. Using Arithmetic Expression. Lesson 4.
Introduction to Visual Basic and Visual C++ Arithmetic Expression Lesson 4 Calculation I154-1-A A @ Peter Lo 2010 1 I154-1-A A @ Peter Lo 2010 2 Arithmetic Expression Using Arithmetic Expression Calculations
More informationDecisions. Arizona State University 1
Decisions CSE100 Principles of Programming with C++, Fall 2018 (based off Chapter 4 slides by Pearson) Ryan Dougherty Arizona State University http://www.public.asu.edu/~redoughe/ Arizona State University
More informationTopics. Chapter 5. Equality Operators
Topics Chapter 5 Flow of Control Part 1: Selection Forming Conditions if/ Statements Comparing Floating-Point Numbers Comparing Objects The equals Method String Comparison Methods The Conditional Operator
More information8.3 Common Loop Patterns
Lecture 17 Topics: Chapter 8. Loop Structures and Booleans 8.3 (Continues) nested loops 8.4. Computing with booleans 8.5 Other common structures: post-test, loop and half. 1 8.3 Common Loop Patterns Nested
More informationChapter 3: Decision Structures
Chapter 3: Decision Structures Starting Out with Java: From Control Structures through Objects Fourth Edition by Tony Gaddis Addison Wesley is an imprint of 2010 Pearson Addison-Wesley. All rights reserved.
More informationChapter 2. C++ Basics. Copyright 2014 Pearson Addison-Wesley. All rights reserved.
Chapter 2 C++ Basics 1 Overview 2.1 Variables and Assignments 2.2 Input and Output 2.3 Data Types and Expressions 2.4 Simple Flow of Control 2.5 Program Style Slide 2-3 2.1 Variables and Assignments 2
More informationChapter 3: Decision Structures
Chapter 3: Decision Structures Starting Out with Java: From Control Structures through Objects Fifth Edition by Tony Gaddis Chapter Topics Chapter 3 discusses the following main topics: The if Statement
More informationIntroduction to C Programming
1 2 Introduction to C Programming 2.6 Decision Making: Equality and Relational Operators 2 Executable statements Perform actions (calculations, input/output of data) Perform decisions - May want to print
More informationswitch case Logic Syntax Basics Functionality Rules Nested switch switch case Comp Sci 1570 Introduction to C++
Comp Sci 1570 Introduction to C++ Outline 1 Outline 1 Outline 1 switch ( e x p r e s s i o n ) { case c o n s t a n t 1 : group of statements 1; break ; case c o n s t a n t 2 : group of statements 2;
More informationSTUDENT OUTLINE. Lesson 8: Structured Programming, Control Structures, if-else Statements, Pseudocode
STUDENT OUTLINE Lesson 8: Structured Programming, Control Structures, if- Statements, Pseudocode INTRODUCTION: This lesson is the first of four covering the standard control structures of a high-level
More informationBRANCHING if-else statements
BRANCHING if-else statements Conditional Statements A conditional statement lets us choose which statement t t will be executed next Therefore they are sometimes called selection statements Conditional
More informationLesson 06 Arrays. MIT 11053, Fundamentals of Programming By: S. Sabraz Nawaz Senior Lecturer in MIT Department of MIT FMC, SEUSL
Lesson 06 Arrays MIT 11053, Fundamentals of Programming By: S. Sabraz Nawaz Senior Lecturer in MIT Department of MIT FMC, SEUSL Array An array is a group of variables (called elements or components) containing
More informationGraphical User Interface Canvas Frame Event structure Platform-free GUI operations Operator << Operator >> Operator = Operator ~ Operator + Operator
Graphical User Interface Canvas Frame Event structure Platform-free GUI operations Operator > Operator = Operator ~ Operator + Operator - Operator [] Operator size Operator $ Operator? Operator!
More informationIntel x86 Jump Instructions. Part 5. JMP address. Operations: Program Flow Control. Operations: Program Flow Control.
Part 5 Intel x86 Jump Instructions Control Logic Fly over code Operations: Program Flow Control Operations: Program Flow Control Unlike high-level languages, processors don't have fancy expressions or
More informationLinear execution of statements. CISC 1600/1610 Computer Science I. Alternatives to linear execution. Linear execution of statements
CISC 1600/1610 Computer Science I Flow of control Professor Daniel Leeds dleeds@fordham.edu JMH 328A Linear execution of statements Each action performed in written order What is the result of this set
More informationIntel x86 Jump Instructions. Part 5. JMP address. Operations: Program Flow Control. Operations: Program Flow Control.
Part 5 Intel x86 Jump Instructions Control Logic Fly over code Operations: Program Flow Control Operations: Program Flow Control Unlike high-level languages, processors don't have fancy expressions or
More informationComputer Science 202 Introduction to Programming The College of Saint Rose Fall Topic Notes: Conditional Execution
Computer Science 202 Introduction to Programming The College of Saint Rose Fall 2012 Topic Notes: Conditional Execution All of our programs so far have had one thing in common: they are entirely sequential.
More informationChapter Overview. More Flow of Control. Flow Of Control. Using Boolean Expressions. Using Boolean Expressions. Evaluating Boolean Expressions
Chapter 3 More Flow of Control Overview 3.1 Using Boolean Expressions 3.2 Multiway Branches 3.3 More about C++ Loop Statements 3.4 Designing Loops Copyright 2011 Pearson Addison-Wesley. All rights reserved.
More informationReview. Relational Operators. The if Statement. CS 151 Review #4
Review Relational Operators You have already seen that the statement total=5 is an assignment statement; that is, the integer 5 is placed in the variable called total. Nothing relevant to our everyday
More informationChapter 2. C++ Basics
Chapter 2 C++ Basics Overview 2.1 Variables and Assignments 2.2 Input and Output 2.3 Data Types and Expressions 2.4 Simple Flow of Control 2.5 Program Style Slide 2-2 2.1 Variables and Assignments Variables
More informationLesson 02 Working with Data Types MIT 31043, Visual Programming By: S. Sabraz Nawaz
Lesson 02 Working with Data Types MIT 31043, Visual Programming By: S. Sabraz Nawaz Senior Lecturer in MIT Department of MIT Faculty of Management and Commerce South Eastern University of Sri Lanka Variables
More informationIntroductionto the Visual Basic Express 2008 IDE
2 Seeing is believing. Proverb Form ever follows function. Louis Henri Sullivan Intelligence is the faculty of making artificial objects, especially tools to make tools. Henri-Louis Bergson Introductionto
More informationLoops and Conditionals. HORT Lecture 11 Instructor: Kranthi Varala
Loops and Conditionals HORT 59000 Lecture 11 Instructor: Kranthi Varala Relational Operators These operators compare the value of two expressions and returns a Boolean value. Beware of comparing across
More informationDECISION STRUCTURES: USING IF STATEMENTS IN JAVA
DECISION STRUCTURES: USING IF STATEMENTS IN JAVA S o far all the programs we have created run straight through from start to finish, without making any decisions along the way. Many times, however, you
More informationChapter Goals. 3.1 The if Statement. Contents 1/30/2013 DECISIONS
CHAPTER DECISIONS 3 Chapter Goals To implement decisions using the if statement To compare integers, floating-point numbers, and Strings To write statements using the Boolean data type To develop strategies
More informationUEE1302(1102) F10: Introduction to Computers and Programming
Computational Intelligence on Automation Lab @ NCTU UEE1302(1102) F10: Introduction to Computers and Programming Programming Lecture 02 Flow of Control (I): Boolean Expression and Selection Learning Objectives
More information5. Selection: If and Switch Controls
Computer Science I CS 135 5. Selection: If and Switch Controls René Doursat Department of Computer Science & Engineering University of Nevada, Reno Fall 2005 Computer Science I CS 135 0. Course Presentation
More informationFull file at https://fratstock.eu Programming in Visual Basic 2010
OBJECTIVES: Chapter 2 User Interface Design Upon completion of this chapter, your students will be able to 1. Use text boxes, masked text boxes, rich text boxes, group boxes, check boxes, radio buttons,
More informationAdministration. Conditional Statements. Agenda. Syntax. Flow of control. Lab 2 due now on floppy Lab 3 due tomorrow via FTP
Administration Conditional Statements CS 99 Summer 2000 Michael Clarkson Lecture 4 Lab 2 due now on floppy Lab 3 due tomorrow via FTP need Instruct account password Lab 4 posted this afternoon Prelim 1
More informationSelec%on and Decision Structures in Java: If Statements and Switch Statements CSC 121 Fall 2016 Howard Rosenthal
Selec%on and Decision Structures in Java: If Statements and Switch Statements CSC 121 Fall 2016 Howard Rosenthal Lesson Goals Understand Control Structures Understand how to control the flow of a program
More informationOperators. Java operators are classified into three categories:
Operators Operators are symbols that perform arithmetic and logical operations on operands and provide a meaningful result. Operands are data values (variables or constants) which are involved in operations.
More informationCONDITIONAL EXECUTION: PART 2
CONDITIONAL EXECUTION: PART 2 yes x > y? no max = x; max = y; logical AND logical OR logical NOT &&! Fundamentals of Computer Science I Outline Review: The if-else statement The switch statement A look
More informationBITG 1223: Selection Control Structure by: ZARITA (FTMK) LECTURE 4 (Sem 1, 16/17)
BITG 1223: Selection Control Structure by: ZARITA (FTMK) LECTURE 4 (Sem 1, 16/17) 1 Learning Outcomes At the end of this lecture, you should be able to: 1. Explain the concept of selection control structure
More informationMaking Decisions In Python
Making Decisions In Python In this section of notes you will learn how to have your programs choose between alternative courses of action. Decision Making Is All About Choices My next vacation? Images:
More informationCOMP Flow of Control: Branching 2. Yi Hong May 19, 2015
COMP 110-001 Flow of Control: Branching 2 Yi Hong May 19, 2015 Review if else Q1: Write a program that Reads an integer from user Prints Even if the integer is even Otherwise, prints Odd Boolean expression
More informationEEE-425 Programming Languages (2013) 1
2 System.Drawing Namespace System.Windows.Forms Namespace Creating forms applications by hand Creating forms applications using Visual Studio designer Windows applications also look different from console
More informationConditions, logical expressions, and selection. Introduction to control structures
Conditions, logical expressions, and selection Introduction to control structures Flow of control In a program, statements execute in a particular order By default, statements are executed sequentially:
More informationOct Decision Structures cont d
Oct. 29 - Decision Structures cont d Programming Style and the if Statement Even though an if statement usually spans more than one line, it is really one statement. For instance, the following if statements
More informationEEE-425 Programming Languages (2013) 1
2 System.Drawing Namespace System.Windows.Forms Namespace Creating forms applications by hand Creating forms applications using Visual Studio designer Windows applications also look different from console
More informationFundamentals of Programming Session 9
Fundamentals of Programming Session 9 Instructor: Reza Entezari-Maleki Email: entezari@ce.sharif.edu 1 Fall 2013 These slides have been created using Deitel s slides Sharif University of Technology Outlines
More informationLogical Operators and switch
Lecture 5 Relational and Equivalence Operators SYS-1S22 / MTH-1A66 Logical Operators and switch Stuart Gibson sg@sys.uea.ac.uk S01.09A 1 Relational Operator Meaning < Less than > Greater than
More informationObjectives. Chapter 4: Control Structures I (Selection) Objectives (cont d.) Control Structures. Control Structures (cont d.) Relational Operators
Objectives Chapter 4: Control Structures I (Selection) In this chapter, you will: Learn about control structures Examine relational and logical operators Explore how to form and evaluate logical (Boolean)
More informationIn this lab, you will learn more about selection statements. You will get familiar to
Objective: In this lab, you will learn more about selection statements. You will get familiar to nested if and switch statements. Nested if Statements: When you use if or if...else statement, you can write
More informationChapter Overview. C++ Basics. Variables and Assignments. Variables and Assignments. Keywords. Identifiers. 2.1 Variables and Assignments
Chapter 2 C++ Basics Overview 2.1 Variables and Assignments 2.2 Input and Output 2.3 Data Types and Expressions 2.4 Simple Flow of Control 2.5 Program Style Copyright 2011 Pearson Addison-Wesley. All rights
More informationChapter 2. C++ Basics. Copyright 2014 Pearson Addison-Wesley. All rights reserved.
Chapter 2 C++ Basics Overview 2.1 Variables and Assignments 2.2 Input and Output 2.3 Data Types and Expressions 2.4 Simple Flow of Control 2.5 Program Style 3 2.1 Variables and Assignments Variables and
More informationCSc 10200! Introduction to Computing. Lecture 2-3 Edgardo Molina Fall 2013 City College of New York
CSc 10200! Introduction to Computing Lecture 2-3 Edgardo Molina Fall 2013 City College of New York 1 C++ for Engineers and Scientists Third Edition Chapter 2 Problem Solving Using C++ 2 Objectives In this
More informationSelec%on and Decision Structures in Java: If Statements and Switch Statements CSC 121 Spring 2016 Howard Rosenthal
Selec%on and Decision Structures in Java: If Statements and Switch Statements CSC 121 Spring 2016 Howard Rosenthal Lesson Goals Understand Control Structures Understand how to control the flow of a program
More informationLecture 8 CSE11 Fall 2013 While Loops, Switch Statement, Simplifying Conditionals
Lecture 8 CSE11 Fall 2013 While Loops, Switch Statement, Simplifying Conditionals What are Computers Really Good at? Complex calculations Repetitive tasks Identifying repetition is key to many programming
More informationPROCEDURAL DATABASE PROGRAMMING ( PL/SQL AND T-SQL)
Technology & Information Management Instructor: Michael Kremer, Ph.D. Class 3 Database Programming PROCEDURAL DATABASE PROGRAMMING ( PL/SQL AND T-SQL) AGENDA 3. Declaring Variables/Constants 4. Flow Control
More informationPIC 10A Flow control. Ernest Ryu UCLA Mathematics
PIC 10A Flow control Ernest Ryu UCLA Mathematics If statement An if statement conditionally executes a block of code. # include < iostream > using namespace std ; int main () { double d1; cin >> d1; if
More informationFull file at
T U T O R I A L 3 Objectives In this tutorial, you will learn to: Set the text in the Form s title bar. Change the Form s background color. Place a Label control on the Form. Display text in a Label control.
More informationControl and Environments Fall 2017 Discussion 1: August 30, 2017 Solutions. 1 Control. If statements. Boolean Operators
CS 61A Control and Environments Fall 2017 Discussion 1: August 30, 2017 Solutions 1 Control Control structures direct the flow of logic in a program. For example, conditionals (if-elif-else) allow a program
More informationChapter 4: Control Structures I (Selection) Objectives. Objectives (cont d.) Control Structures. Control Structures (cont d.
Chapter 4: Control Structures I (Selection) In this chapter, you will: Objectives Learn about control structures Examine relational and logical operators Explore how to form and evaluate logical (Boolean)
More informationBBM 101 Introduc/on to Programming I Fall 2013, Lecture 4
BBM 101 Introduc/on to Programming I Fall 2013, Lecture 4 Instructors: Aykut Erdem, Erkut Erdem, Fuat Akal TAs: Ahmet Selman Bozkir, Gultekin Isik, Yasin Sahin 1 Today Condi/onal Branching Logical Expressions
More informationControl and Environments Fall 2017 Discussion 1: August 30, Control. If statements. Boolean Operators
CS 61A Control and Environments Fall 2017 Discussion 1: August 30, 2017 1 Control Control structures direct the flow of logic in a program. For example, conditionals (if-elif-else) allow a program to skip
More informationProgramming in C++ PART 2
Lecture 07-2 Programming in C++ PART 2 By Assistant Professor Dr. Ali Kattan 1 The while Loop and do..while loop In the previous lecture we studied the for Loop in C++. In this lecture we will cover iteration
More informationYou can call the project anything you like I will be calling this one project slide show.
C# Tutorial Load all images from a folder Slide Show In this tutorial we will see how to create a C# slide show where you load everything from a single folder and view them through a timer. This exercise
More informationComputer Programming, I. Laboratory Manual. Experiment #3. Selections
Think Twice Code Once The Islamic University of Gaza Engineering Faculty Department of Computer Engineering Fall 2017 ECOM 2005 Khaleel I. Shaheen Computer Programming, I Laboratory Manual Experiment #3
More informationMicrosoft Visual Basic 2005 CHAPTER 5. Mobile Applications Using Decision Structures
Microsoft Visual Basic 2005 CHAPTER 5 Mobile Applications Using Decision Structures Objectives Write programs for devices other than a personal computer Understand the use of handheld technology Write
More information