For that purpose, java provides control structures that serve to specify what has to be done by our program, when and under which circumstances.
|
|
- Roy Martin
- 6 years ago
- Views:
Transcription
1 Control Structures A program is usually not limited to a linear sequence of instructions. During its process it may bifurcate, repeat code or take decisions. For that purpose, java provides control structures that serve to specify what has to be done by our program, when and under which circumstances.
2 Java allows usage of different control statements which act as conditional or unconditional according to their usage within a program. The control activates in two modes featuring, Selection and Iteration. Hence the control statements of Java are referred to of two types : (i )Selection / Decision control statements : The Selection control statements refer to transfer of control or execution depending on the given condition and a selection is made depending on the given options. The different course of action are performed according to the given condition. They are also termed as Decision Construct Statements as they help in taking decisions for further execution of the statements/instructions within the program. (ii )Iteration/looping control statements : The Iteration Statements on the other hand act as an automatic looping statements. Here the block/compound statement is executed again and again until a given condition is met.
3 SELECTION STATEMENTS OF java The Java if statement is used to test the condition. It checks Boolean condition: true or false. There are various types of if statement in java. if if-else if-else-if nested if statement statement ladder statement
4 Java IF Statement The Java if statement tests the condition. It executes the if block if condition is true. Syntax: if(condition) //code to be executed
5 public class IfExample public static void main(string[] args) int age=20; if(age>18) System.out.print("Age is greater than 18");
6 Java IF-else Statement The Java if-else statement also tests the condition. It executes the if block if condition is true otherwise else block is executed. Syntax: if(condition) //code if condition is true else //code if condition is false
7
8 public class IfElseExample public static void main(string[] args) int number=13; if(number%2==1) System.out.println( ODD number"); else System.out.println( EVEN number");
9 Java IF-else-if ladder Statement The if-else-if ladder statement executes one condition from multiple statements. Syntax: if(condition1) //code to be executed if condition1 is true else if(condition2) //code to be executed if condition2 is true else if(condition3) //code to be executed if condition3 is true... else //code to be executed if all the conditions are false
10
11 public class IfElseIfExample public static void main(string[] args) int marks=65; if(marks<50) System.out.println("fail"); else if((marks>=50 )&& (marks<60)) System.out.println("D grade"); else if(marks>=60 && marks<70) System.out.println("C grade"); else if(marks>=70 && marks<80) System.out.println("B grade"); else if(marks>=80 && marks<90) System.out.println("A grade"); else if(marks>=90 && marks<100) System.out.println("A+ grade"); else System.out.println("Invalid!");
12 The Java switch statement executes one statement from multiple conditions. It is like if-else-if ladder statement. switch(expression) case value1: break; //optional case value2: break; //optional... //code to be executed; //code to be executed; default: code to be executed if all cases are not matched;
13 public class SwitchExample public static void main(string[] args) int number=20; switch(number) case 10: System.out.println("10") ; break; case 20: System.out.println("20"); break; case 30: System.out.println("30"); break; default : System.out.println("Not in 10, 20 or 30");
14
15 import java.util.scanner; class OddOrEven public static void main(string args[]) int x; System.out.println("Enter an integer to check if it is odd or even "); Scanner a = new Scanner(System.in); x = a.nextint(); if ( x % 2 == 0 ) System.out.println("You entered an even number."); else System.out.println("You entered an odd number.");
16 next() can read the input only till the space. It can't read two words separated by space. Also, next() places the cursor in the same line after reading the input. nextline() reads input including space between the words (that is, it reads till the end of line \n). Once the input is read, nextline() positions the cursor in the next line. for reading the entire line you can use nextline()
17 import java.util.scanner; class MaxNum public static void main(string args[]) int x, y, z,max; System.out.println("Enter three integers "); Scanner in = new Scanner(System.in); x = in.nextint(); y = in.nextint(); z = in.nextint(); max=x; if(y>max) max=y; if(z>max) max=z; System.out.println("maximum is = "+max); /* if ( x > y && x > z ) System.out.println("First number is largest."); else if ( y > x && y > z ) System.out.println("Second number is largest."); else if ( z > x && z > y ) System.out.println("Third number is largest."); else System.out.println("Entered numbers are not distinct.");*/
18 TOTAL_AMMOUNT DIS MORE THAN % LESS THAN OR EQUAL TO BUT > % BETWEEN AND % OTHERWISE NIL
19 A loop statement allows us to execute a statement or group of statements multiple times.
20 Sr. No Loop & Description while loop Repeats a statement or group of statements while a given condition is true. It tests the condition before executing the loop body. for loop Execute a sequence of statements multiple times and abbreviates the code that manages the loop variable. do...while loop Like a while statement, except that it tests the condition at the end of the loop body.
21 The syntax of a while loop is while(boolean_expression) // Statements // updation public class Test public static void main(string args[]) int x = 10; while( x < 20 ) System.out.print("value of x : " + x ); x++; System.out.print("\n");
22 for(initialization; Boolean_expression; update) // Statements Here is the flow of control in a for loop The initialization step is executed first, and only once. This step allows you to declare and initialize any loop control variables and this step ends with a semi colon (;). Next, the Boolean expression is evaluated. If it is true, the body of the loop is executed. If it is false, the body of the loop will not be executed and control jumps to the next statement past the for loop. After the body of the for loop gets executed, the control jumps back up to the update statement. This statement allows you to update any loop control variables. This statement can be left blank with a semicolon at the end. The Boolean expression is now evaluated again. If it is true, the loop executes and the process repeats (body of loop, then update step, then Boolean expression). After the Boolean expression is false, the for loop terminates.
23
24 public class Test public static void main(string args[]) for(int x = 10; x < 20; x = x + 1) System.out.print("value of x : " + x ); System.out.print("\n");
25 Display a pattern using for loop class Display public static void main(string args [ ] ) System.out.println ("Screen Display") ; for (int i = 1; i<=3; i++) for(int j=1; j<=i; j++) System.out.print ( i + ) ; System.out.print ("\n"); System.out.println("Done");
26 2 class Display1 public static void main(string args [ ] ) System.out.println ("Screen Display") ; for (int i = 1; i<=9; i++) for(int j=1; j<=i; j++) System.out.print ( j +" ") ; System.out.print ("\n"); System.out.println("Done");
27 3 class Display3 public static void main(string args [ ] ) System.out.println ("Screen Display") ; for (int i = 5; i>=1; i--) for(int j=1; j<=i; j++) System.out.print ( j +" ") ; System.out.print ("\n"); System.out.println("Done");
28 A do...while loop is similar to a while loop, except that a do...while loop is guaranteed to execute at least one time. Syntax Following is the syntax of a do...while loop do // Statements while(boolean_expression);
29 Notice that the Boolean expression appears at the end of the loop, so the statements in the loop execute once before the Boolean is tested. If the Boolean expression is true, the control jumps back up to do statement, and the statements in the loop execute again. This process repeats until the Boolean expression is false.
30
31 public class Test public static void main(string args[]) int x = 10; do System.out.print("value of x : " + x ); x++; System.out.print("\n"); while( x < 20 );
32 Enhanced for loop in Java Syntax Following is the syntax of enhanced for loop for(declaration : expression) // Statements
33 public class Test public static void main(string args[]) int [] numbers = 10, 20, 30, 40, 50; for(int x : numbers ) System.out.print( x ); System.out.print(","); System.out.print("\n"); String [] names = "James", "Larry", "Tom", "Lacy"; for( String n : names ) System.out.print( n ); System.out.print(","); 10, 20, 30, 40, 50, James, Larry, Tom, Lacy,
34 Control Statement & Description break statement Terminates the loop or switch statement and transfers execution to the statement immediately following the loop or switch. OR The break statement in Java programming language has the following two usages 1. When the break statement is encountered inside a loop, the loop is immediately terminated and the program control resumes at the next statement following the loop. 2. It can be used to terminate a case in the switch statement (covered in the next chapter).
35 public class Test public static void main(string args[]) int [] numbers = 10, 20, 30, 40, 50; for(int x : numbers ) if( x == 30 ) break; System.out.print( x ); System.out.print("\n");
36 Control Statement & Description continue statement Causes the loop to skip the remainder of its body and immediately retest its condition prior to reiterating.
37 The continue keyword can be used in any of the loop control structures. It causes the loop to immediately jump to the next iteration of the loop. In a for loop, the continue keyword causes control to immediately jump to the update statement. In a while loop or do/while loop, control immediately jumps to the Boolean expression.
38 public class Test public static void main(string args[]) int [] numbers = 10, 20, 30, 40, 50; for(int x : numbers ) if( x == 30 ) continue; System.out.print( x ); System.out.print("\n");
39 public class Test public static void main(string args[]) int [] numbers = 10, 20, 30, 40, 50; for(int i=0;i<numbers.length;i++) if( numbers[i] == 30 ) continue; System.out.print( numbers[i] ); System.out.print("\n");
For that purpose, java provides control structures that serve to specify what has to be done by our program, when and under which circumstances.
Control Structures A program is usually not limited to a linear sequence of instructions. During its process it may bifurcate, repeat code or take decisions. For that purpose, java provides control structures
More informationJava Loop Control. Programming languages provide various control structures that allow for more complicated execution paths.
Loop Control There may be a situation when you need to execute a block of code several number of times. In general, statements are executed sequentially: The first statement in a function is executed first,
More informationJava provides a rich set of operators to manipulate variables. We can divide all the Java operators into the following groups:
JAVA OPERATORS GENERAL Java provides a rich set of operators to manipulate variables. We can divide all the Java operators into the following groups: Arithmetic Operators Relational Operators Bitwise Operators
More informationThe Java language has a wide variety of modifiers, including the following:
PART 5 5. Modifier Types The Java language has a wide variety of modifiers, including the following: Java Access Modifiers Non Access Modifiers 5.1 Access Control Modifiers Java provides a number of access
More informationAP COMPUTER SCIENCE A
AP COMPUTER SCIENCE A CONTROL FLOW Aug 28 2017 Week 2 http://apcs.cold.rocks 1 More operators! not!= not equals to % remainder! Goes ahead of boolean!= is used just like == % is used just like / http://apcs.cold.rocks
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 informationSoftware Practice 1 Basic Grammar
Software Practice 1 Basic Grammar Basic Syntax Data Type Loop Control Making Decision Prof. Joonwon Lee T.A. Jaehyun Song Jongseok Kim (42) T.A. Sujin Oh Junseong Lee (43) 1 2 Java Program //package details
More informationSoftware Practice 1 - Basic Grammar Basic Syntax Data Type Loop Control Making Decision
Software Practice 1 - Basic Grammar Basic Syntax Data Type Loop Control Making Decision Prof. Hwansoo Han T.A. Minseop Jeong T.A. Wonseok Choi 1 Java Program //package details public class ClassName {
More informationH212 Introduction to Software Systems Honors
Introduction to Software Systems Honors Lecture #04: Fall 2015 1/20 Office hours Monday, Wednesday: 10:15 am to 12:00 noon Tuesday, Thursday: 2:00 to 3:45 pm Office: Lindley Hall, Room 401C 2/20 Printing
More informationJAVA PROGRAMMING LAB. ABSTRACT In this Lab you will learn to define and invoke void and return java methods
Islamic University of Gaza Faculty of Engineering Computer Engineering Dept. Computer Programming Lab (ECOM 2114) ABSTRACT In this Lab you will learn to define and invoke void and return java methods JAVA
More information10/30/2010. Introduction to Control Statements. The if and if-else Statements (cont.) Principal forms: JAVA CONTROL STATEMENTS SELECTION STATEMENTS
JAVA CONTROL STATEMENTS Introduction to Control statements are used in programming languages to cause the flow of control to advance and branch based on changes to the state of a program. In Java, control
More informationModule - 2 Overview of Java History of Java Technology?
Overview of Java Module - 2 Java is an object-oriented programming language with its own runtime environment. Java is a programming language and a platform. Java is a high level, robust, secured and object-oriented
More informationProgramming Basics. Digital Urban Visualization. People as Flows. ia
Programming Basics Digital Urban Visualization. People as Flows. 28.09.2015 ia zuend@arch.ethz.ch treyer@arch.ethz.ch Programming? Programming is the interaction between the programmer and the computer.
More informationSequence structure. The computer executes java statements one after the other in the order in which they are written. Total = total +grade;
Control Statements Control Statements All programs could be written in terms of only one of three control structures: Sequence Structure Selection Structure Repetition Structure Sequence structure The
More informationJAVA OPERATORS GENERAL
JAVA OPERATORS GENERAL Java provides a rich set of operators to manipulate variables. We can divide all the Java operators into the following groups: Arithmetic Operators Relational Operators Bitwise Operators
More informationCIS 1068 Program Design and Abstraction Spring2016 Midterm Exam 1. Name SOLUTION
CIS 1068 Program Design and Abstraction Spring2016 Midterm Exam 1 Name SOLUTION Page Points Score 2 15 3 8 4 18 5 10 6 7 7 7 8 14 9 11 10 10 Total 100 1 P age 1. Program Traces (41 points, 50 minutes)
More informationLoops. CSE 114, Computer Science 1 Stony Brook University
Loops CSE 114, Computer Science 1 Stony Brook University http://www.cs.stonybrook.edu/~cse114 1 Motivation Suppose that you need to print a string (e.g., "Welcome to Java!") a user-defined times N: N?
More informationJava provides a rich set of operators to manipulate variables. We can divide all the Java operators into the following groups:
Basic Operators Java provides a rich set of operators to manipulate variables. We can divide all the Java operators into the following groups: Arithmetic Operators Relational Operators Bitwise Operators
More informationIntroduction to OOP with Java. Instructor: AbuKhleif, Mohammad Noor Sep 2017
Introduction to OOP with Java Instructor: AbuKhleif, Mohammad Noor Sep 2017 Lecture 03: Control Flow Statements: Selection Instructor: AbuKhleif, Mohammad Noor Sep 2017 Instructor AbuKhleif, Mohammad Noor
More informationJava. Programming: Chapter Objectives. Why Is Repetition Needed? Chapter 5: Control Structures II. Program Design Including Data Structures
Chapter 5: Control Structures II Java Programming: Program Design Including Data Structures Chapter Objectives Learn about repetition (looping) control structures Explore how to construct and use count-controlled,
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 informationThe for Loop, Accumulator Variables, Seninel Values, and The Random Class. CS0007: Introduction to Computer Programming
The for Loop, Accumulator Variables, Seninel Values, and The Random Class CS0007: Introduction to Computer Programming Review General Form of a switch statement: switch (SwitchExpression) { case CaseExpression1:
More informationCSE 1223: Introduction to Computer Programming in Java Chapter 3 Branching
CSE 1223: Introduction to Computer Programming in Java Chapter 3 Branching 1 Flow of Control The order in which statements in a program are executed is called the flow of control So far we have only seen
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 informationJava Programming: Guided Learning with Early Objects Chapter 5 Control Structures II: Repetition
Java Programming: Guided Learning with Early Objects Chapter 5 Control Structures II: Repetition Learn about repetition (looping) control structures Explore how to construct and use: o Counter-controlled
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 informationExample: Monte Carlo Simulation 1
Example: Monte Carlo Simulation 1 Write a program which conducts a Monte Carlo simulation to estimate π. 1 See https://en.wikipedia.org/wiki/monte_carlo_method. Zheng-Liang Lu Java Programming 133 / 149
More informationLoops and Expression Types
Software and Programming I Loops and Expression Types Roman Kontchakov / Carsten Fuhs Birkbeck, University of London Outline The while, for and do Loops Sections 4.1, 4.3 and 4.4 Variable Scope Section
More information6 COMPUTER PROGRAMMING
6 COMPUTER PROGRAMMING ITERATION STATEMENT CONTENTS WHILE DO~WHILE FOR statement 2 Iteration Statement provides While / do-while / For statements for supporting an iteration logic function that the logic
More informationPROGRAMMING FUNDAMENTALS
PROGRAMMING FUNDAMENTALS Q1. Name any two Object Oriented Programming languages? Q2. Why is java called a platform independent language? Q3. Elaborate the java Compilation process. Q4. Why do we write
More informationMidterm Examination (MTA)
M105: Introduction to Programming with Java Midterm Examination (MTA) Spring 2013 / 2014 Question One: [6 marks] Choose the correct answer and write it on the external answer booklet. 1. Compilers and
More informationChapter 3. Selections
Chapter 3 Selections 1 Outline 1. Flow of Control 2. Conditional Statements 3. The if Statement 4. The if-else Statement 5. The Conditional operator 6. The Switch Statement 7. Useful Hints 2 1. Flow of
More informationExample. Write a program which sums two random integers and lets the user repeatedly enter a new answer until it is correct.
Example Write a program which sums two random integers and lets the user repeatedly enter a new answer until it is correct. 1... 2 Scanner input = new Scanner(System.in); 3 int x = (int) (Math.random()
More informationRepetition, Looping. While Loop
Repetition, Looping Last time we looked at how to use if-then statements to control the flow of a program. In this section we will look at different ways to repeat blocks of statements. Such repetitions
More informationSTUDENT LESSON A12 Iterations
STUDENT LESSON A12 Iterations Java Curriculum for AP Computer Science, Student Lesson A12 1 STUDENT LESSON A12 Iterations INTRODUCTION: Solving problems on a computer very often requires a repetition of
More informationJava Programming: Guided Learning with Early Objects Chapter 5 Control Structures II: Repetition
Java Programming: Guided Learning with Early Objects Chapter 5 Control Structures II: Repetition Learn about repetition (looping) control structures Explore how to construct and use: o Counter-controlled
More informationIteration: Intro. Two types of loops: 1. Pretest Condition precedes body Iterates 0+ times. 2. Posttest Condition follows body Iterates 1+ times
Iteration: Intro Two types of loops: 1. Pretest Condition precedes body Iterates 0+ times 2. Posttest Condition follows body Iterates 1+ times 1 Iteration: While Loops Pretest loop Most general loop construct
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 informationMotivating Examples (1.1) Selections. Motivating Examples (1.2) Learning Outcomes. EECS1022: Programming for Mobile Computing Winter 2018
Motivating Examples (1.1) Selections EECS1022: Programming for Mobile Computing Winter 2018 CHEN-WEI WANG 1 import java.util.scanner; 2 public class ComputeArea { 3 public static void main(string[] args)
More informationTop-Down Program Development
Top-Down Program Development Top-down development is a way of thinking when you try to solve a programming problem It involves starting with the entire problem, and breaking it down into more manageable
More informationFundamentals of Programming Data Types & Methods
Fundamentals of Programming Data Types & Methods By Budditha Hettige Overview Summary (Previous Lesson) Java Data types Default values Variables Input data from keyboard Display results Methods Operators
More informationAP CS Unit 3: Control Structures Notes
AP CS Unit 3: Control Structures Notes The if and if-else Statements. These statements are called control statements because they control whether a particular block of code is executed or not. Some texts
More informationSelections. EECS1021: Object Oriented Programming: from Sensors to Actuators Winter 2019 CHEN-WEI WANG
Selections EECS1021: Object Oriented Programming: from Sensors to Actuators Winter 2019 CHEN-WEI WANG Learning Outcomes The Boolean Data Type if Statement Compound vs. Primitive Statement Common Errors
More informationIn this chapter, you will:
Java Programming: Guided Learning with Early Objects Chapter 4 Control Structures I: Selection In this chapter, you will: Make decisions with the if and if else structures Use compound statements in an
More informationPlease answer the following questions. Do not re-code the enclosed codes if you have already completed them.
Dec. 9 Loops Please answer the following questions. Do not re-code the enclosed codes if you have already completed them. What is a loop? What are the three loops in Java? What do control structures do?
More informationLectures 3-1, 3-2. Control Structures. Control Structures, Shimon Schocken IDC Herzliya, slide 1
Introduction to Computer Science Shimon Schocken IDC Herzliya Lectures 3-1, 3-2 Control Structures Control Structures, Shimon Schocken IDC Herzliya, www.intro2cs.com slide 1 Shorthand operators (increment
More informationMore Things We Can Do With It! Overview. Circle Calculations. πr 2. π = More operators and expression types More statements
More Things We Can Do With It! More operators and expression types More s 11 October 2007 Ariel Shamir 1 Overview Variables and declaration More operators and expressions String type and getting input
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 informationComputational Expression
Computational Expression Conditionals Janyl Jumadinova 10 October, 2018 Janyl Jumadinova Computational Expression 10 October, 2018 1 / 16 Computational Thinking: a problem solving process Decomposition
More informationLecture 14. 'for' loops and Arrays
Lecture 14 'for' loops and Arrays For Loops for (initiating statement; conditional statement; next statement) // usually incremental body statement(s); The for statement provides a compact way to iterate
More informationWentworth Institute of Technology. Engineering & Technology WIT COMP1000. Simple Control Flow: if-else statements
WIT COMP1000 Simple Control Flow: if-else statements Control Flow Control flow is the order in which program statements are executed So far, all of our programs have been executed straight-through from
More informationIntroduction to Computer Science, Shimon Schocken, IDC Herzliya. Lectures Control Structures
Introduction to Computer Science, Shimon Schocken, IDC Herzliya Lectures 3.1 3.2 Control Structures Control Structures, Shimon Schocken IDC Herzliya, www.intro2cs.com slide 1 Control structures A program
More information1 Short Answer (10 Points Each)
1 Short Answer (10 Points Each) 1. Write a for loop that will calculate a factorial. Assume that the value n has been input by the user and have the loop create n! and store it in the variable fact. Recall
More informationChapter 4 Control Structures
Chapter 4 Control Structures Foundational Java Key Elements and Practical Programming 1 if - else switch Control Structures break and continue Ternary operator while and do-while loops for loops 2 Two
More informationCS212 Midterm. 1. Read the following code fragments and answer the questions.
CS1 Midterm 1. Read the following code fragments and answer the questions. (a) public void displayabsx(int x) { if (x > 0) { System.out.println(x); return; else { System.out.println(-x); return; System.out.println("Done");
More informationDecisions (If Statements) And Boolean Expressions
Decisions (If Statements) And Boolean Expressions CSE 1310 Introduction to Computers and Programming Vassilis Athitsos University of Texas at Arlington Last updated: 2/15/16 1 Syntax if (boolean_expr)
More informationFall CS 101: Test 2 Name UVA ID. Grading. Page 1 / 4. Page3 / 20. Page 4 / 13. Page 5 / 10. Page 6 / 26. Page 7 / 17.
Grading Page 1 / 4 Page3 / 20 Page 4 / 13 Page 5 / 10 Page 6 / 26 Page 7 / 17 Page 8 / 10 Total / 100 1. (4 points) What is your course section? CS 101 CS 101E Pledged Page 1 of 8 Pledged The following
More informationLecture 6. Assignments. Summary - Variables. Summary Program Parts 1/29/18. Reading: 3.1, 3.2, 3.3, 3.4
Assignments Lecture 6 Complete for Project 1 Reading: 3.1, 3.2, 3.3, 3.4 Summary Program Parts Summary - Variables Class Header (class name matches the file name prefix) Class Body Because this is a program,
More informationChapter 4: Control Structures I
Chapter 4: Control Structures I Java Programming: From Problem Analysis to Program Design, Second Edition Chapter Objectives Learn about control structures. Examine relational and logical operators. Explore
More informationLast Class. While loops Infinite loops Loop counters Iterations
Last Class While loops Infinite loops Loop counters Iterations public class January31{ public static void main(string[] args) { while (true) { forloops(); if (checkclassunderstands() ) { break; } teacharrays();
More informationCS 231 Data Structures and Algorithms Fall Event Based Programming Lecture 06 - September 17, Prof. Zadia Codabux
CS 231 Data Structures and Algorithms Fall 2018 Event Based Programming Lecture 06 - September 17, 2018 Prof. Zadia Codabux 1 Agenda Event-based Programming Misc. Java Operator Precedence Java Formatting
More informationIteration statements - Loops
Iteration statements - Loops : ) הוראות חזרה / לולאות ( statements Java has three kinds of iteration WHILE FOR DO... WHILE loop loop loop Iteration (repetition) statements causes Java to execute one or
More informationCOMP-202 Unit 4: Programming With Iterations. CONTENTS: The while and for statements
COMP-202 Unit 4: Programming With Iterations CONTENTS: The while and for statements Introduction (1) Suppose we want to write a program to be used in cash registers in stores to compute the amount of money
More informationCS Introduction to Programming Midterm Exam #1 - Prof. Reed Fall 2009
CS 102 - Introduction to Programming Midterm Exam #1 - Prof. Reed Fall 2009 What is your name?: There are two sections: I. True/False..................... 60 points; ( 30 questions, 2 points each) II.
More informationQuestion: Total Points: Score:
CS 170 Exam 1 Section 001 Fall 2014 Name (print): Instructions: Keep your eyes on your own paper and do your best to prevent anyone else from seeing your work. Do NOT communicate with anyone other than
More informationSchool of Computer Science CPS109 Course Notes 6 Alexander Ferworn Updated Fall 15. CPS109 Course Notes 6. Alexander Ferworn
CPS109 Course Notes 6 Alexander Ferworn Unrelated Facts Worth Remembering Use metaphors to understand issues and explain them to others. Look up what metaphor means. Table of Contents Contents 1 ITERATION...
More informationCOMPUTER PROGRAMMING LOOPS
COMPUTER PROGRAMMING LOOPS http://www.tutorialspoint.com/computer_programming/computer_programming_loops.htm Copyright tutorialspoint.com Let's consider a situation when you want to write five times. Here
More informationAccelerating Information Technology Innovation
Accelerating Information Technology Innovation http://aiti.mit.edu Cali, Colombia Summer 2012 Lección 03 Control Structures Agenda 1. Block Statements 2. Decision Statements 3. Loops 2 What are Control
More informationJava Simple Data Types
Intro to Java Unit 1 Multiple Choice Test Key Java Simple Data Types This Test Is a KEY DO NOT WRITE ON THIS TEST This test includes program segments, which are not complete programs. Answer such questions
More informationJava Programming for Selenium
Video 5 - Java Control Flow, String Handling and Arrays Java Programming for Selenium 1) Conditional / Decision Making 2) Loop 3) Branching 4) String Handling in Java 5) Java Arrays 1) Conditional / Decision
More informationSection 003 Fall CS 170 Exam 1. Name (print): Instructions:
CS 170 Exam 1 Section 003 Fall 2012 Name (print): Instructions: Keep your eyes on your own paper and do your best to prevent anyone else from seeing your work. Do NOT communicate with anyone other than
More informationCSIS 10A Assignment 4 SOLUTIONS
CSIS 10A Assignment 4 SOLUTIONS Calculator.java Name: Naomi Lyles Approximate completion time: 20 minutes References: None Write a description of class Calculator here. @author (your name) @version (a
More informationChapter 4: Control structures. Repetition
Chapter 4: Control structures Repetition Loop Statements After reading and studying this Section, student should be able to Implement repetition control in a program using while statements. Implement repetition
More information2.2 - Making Decisions
2.2 - Making Decisions So far we have only made programs that execute the statements in order, starting with the statements at the top of the screen and moving down. However, you can write programs that
More informationCONTENTS: Compilation Data and Expressions COMP 202. More on Chapter 2
CONTENTS: Compilation Data and Expressions COMP 202 More on Chapter 2 Programming Language Levels There are many programming language levels: machine language assembly language high-level language Java,
More informationExam 1. Programming I (CPCS 202) Instructor: M. G. Abbas Malik. Total Marks: 45 Obtained Marks:
كلية الحاسبات وتقنية المعلوما Exam 1 Programming I (CPCS 202) Instructor: M. G. Abbas Malik Date: October 18, 2015 Student Name: Student ID: Total Marks: 45 Obtained Marks: Instructions: Do not open this
More informationIntroduction. C provides two styles of flow control:
Introduction C provides two styles of flow control: Branching Looping Branching is deciding what actions to take and looping is deciding how many times to take a certain action. Branching constructs: if
More informationCOSC 123 Computer Creativity. Java Decisions and Loops. Dr. Ramon Lawrence University of British Columbia Okanagan
COSC 123 Computer Creativity Java Decisions and Loops Dr. Ramon Lawrence University of British Columbia Okanagan ramon.lawrence@ubc.ca Key Points 1) A decision is made by evaluating a condition in an if/else
More informationLoops (while and for)
Loops (while and for) CSE 1310 Introduction to Computers and Programming Alexandra Stefan 1 Motivation Was there any program we did (class or hw) where you wanted to repeat an action? 2 Motivation Name
More informationObject Oriented Programming. Java-Lecture 6 - Arrays
Object Oriented Programming Java-Lecture 6 - Arrays Arrays Arrays are data structures consisting of related data items of the same type In Java arrays are objects -> they are considered reference types
More informationBjarne Stroustrup. creator of C++
We Continue GEEN163 I have always wished for my computer to be as easy to use as my telephone; my wish has come true because I can no longer figure out how to use my telephone. Bjarne Stroustrup creator
More information1 class Lecture3 { 2 3 "Selections" // Keywords 8 if, else, else if, switch, case, default. Zheng-Liang Lu Java Programming 88 / 133
1 class Lecture3 { 2 3 "Selections" 4 5 } 6 7 // Keywords 8 if, else, else if, switch, case, default Zheng-Liang Lu Java Programming 88 / 133 Flow Controls The basic algorithm (and program) is constituted
More information1 class Lecture3 { 2 3 "Selections" // Keywords 8 if, else, else if, switch, case, default. Zheng-Liang Lu Java Programming 89 / 137
1 class Lecture3 { 2 3 "Selections" 4 5 } 6 7 // Keywords 8 if, else, else if, switch, case, default Zheng-Liang Lu Java Programming 89 / 137 Flow Controls The basic algorithm (and program) is constituted
More informationHandout 5 cs180 - Programming Fundamentals Spring 15 Page 1 of 8. Handout 5. Loops.
Handout 5 cs180 - Programming Fundamentals Spring 15 Page 1 of 8 Handout 5 Loops. Loops implement repetitive computation, a k a iteration. Java loop statements: while do-while for 1. Start with the while-loop.
More informationSection 002 Spring CS 170 Exam 1. Name (print): Instructions:
CS 170 Exam 1 Section 002 Spring 2015 Name (print): Instructions: Keep your eyes on your own paper and do your best to prevent anyone else from seeing your work. Do NOT communicate with anyone other than
More informationM105: Introduction to Programming with Java Midterm Examination (MTA) Makeup Spring 2013 / 2014
M105: Introduction to Programming with Java Midterm Examination (MTA) Makeup Spring 2013 / 2014 Question One: Choose the correct answer and write it on the external answer booklet. 1. Java is. a. case
More informationSection 2.2 Your First Program in Java: Printing a Line of Text
Chapter 2 Introduction to Java Applications Section 2.2 Your First Program in Java: Printing a Line of Text 2.2 Q1: End-of-line comments that should be ignored by the compiler are denoted using a. Two
More informationCourse Outline. Introduction to java
Course Outline 1. Introduction to OO programming 2. Language Basics Syntax and Semantics 3. Algorithms, stepwise refinements. 4. Quiz/Assignment ( 5. Repetitions (for loops) 6. Writing simple classes 7.
More informationUnit 5. Decision Making and Looping. School of Science and Technology INTRODUCTION
INTRODUCTION Decision Making and Looping Unit 5 In the previous lessons we have learned about the programming structure, decision making procedure, how to write statements, as well as different types of
More informationChapter 4: Control structures
Chapter 4: Control structures Repetition Loop Statements After reading and studying this Section, student should be able to Implement repetition control in a program using while statements. Implement repetition
More information1. Find the output of following java program. class MainClass { public static void main (String arg[])
1. Find the output of following java program. public static void main(string arg[]) int arr[][]=4,3,2,1; int i,j; for(i=1;i>-1;i--) for(j=1;j>-1;j--) System.out.print(arr[i][j]); 1234 The above java program
More informationRepe$$on CSC 121 Spring 2017 Howard Rosenthal
Repe$$on CSC 121 Spring 2017 Howard Rosenthal Lesson Goals Learn the following three repetition structures in Java, their syntax, their similarities and differences, and how to avoid common errors when
More informationCSE 142, Spring 2009, Sample Final Exam #2. Good luck!
CSE 142, Spring 2009, Sample Final Exam #2 Name: Section: Student ID #: TA: Rules: You have 110 minutes to complete this exam. You will receive a deduction if you keep working after the instructor calls
More information1. Which of the following is the correct expression of character 4? a. 4 b. "4" c. '\0004' d. '4'
Practice questions: 1. Which of the following is the correct expression of character 4? a. 4 b. "4" c. '\0004' d. '4' 2. Will System.out.println((char)4) display 4? a. Yes b. No 3. The expression "Java
More informationWrite a program which converts all lowercase letter in a sentence to uppercase.
Write a program which converts all lowercase letter in a sentence to uppercase. For Example: 1) Consider a sentence "welcome to Java Programming!" its uppercase conversion is " WELCOME TO JAVA PROGRAMMING!"
More informationScanner Objects. Zheng-Liang Lu Java Programming 82 / 133
Scanner Objects It is not convenient to modify the source code and recompile it for a different radius. Reading from the console enables the program to receive an input from the user. A Scanner object
More informationDM503 Programming B. Peter Schneider-Kamp.
DM503 Programming B Peter Schneider-Kamp petersk@imada.sdu.dk! http://imada.sdu.dk/~petersk/dm503/! VARIABLES, EXPRESSIONS & STATEMENTS 2 Values and Types Values = basic data objects 42 23.0 "Hello!" Types
More informationDELHI PUBLIC SCHOOL TAPI
Loops Chapter-1 There may be a situation, when you need to execute a block of code several number of times. In general, statements are executed sequentially: The first statement in a function is executed
More informationControls Structure for Repetition
Controls Structure for Repetition So far we have looked at the if statement, a control structure that allows us to execute different pieces of code based on certain conditions. However, the true power
More informationArithmetic Compound Assignment Operators
Arithmetic Compound Assignment Operators Note that these shorthand operators are not available in languages such as Matlab and R. Zheng-Liang Lu Java Programming 76 / 141 Example 1... 2 int x = 1; 3 System.out.println(x);
More information