Friday, February 10, Lab Notes
|
|
- Kelley Jackson
- 6 years ago
- Views:
Transcription
1 Friday, February 10, 2017 Lab Notes Topics for today Structures in C Redirection of input and output in a Unix-like environment Command line arguments More pre-processor options Programs: Finish Program 1, begin Program 2 due 2/24 1. Structures in C An array is a collection of variables of the same type. C lets us define structures which potentially contain items of different types. Here is an example similar to Fig struct person char initial; char last[15]; int age; int salary; char gender; Having defined type person we can declare variables of the type person Bill, Amy, Mike, Kate; And access the individual fields using dot notation as follows Bill.gender = M ; Bill.salary = Bill.age * 10; printf( %s\n,bill.last); Amy.salary = Mike.salary; Kate.age++; We can have arrays of structures Assign Bill person Department [50]; Department[0] = Bill; and find the average salary of the department members sum = 0; for (i=0; i<50; i++) sum+=department[i].salary; printf( Average is %d\n,sum/50); Comp 162 Lab Notes Page 1 of 6 February 10, 2017
2 2. Redirection of input and output in a Unix-like environment A C program has three built-in file streams: stdin, stderr and stdout. When you use scanf you are reading from stdin. When you use printf you are writing to stdout. You can write to stderr by using fprintf(stderr,.. When running programs in a Unix environment, a simple way to read data from a file into a program and to save results and/or error messages to a file without making any changes to the program source code is to use the Unix shell redirection. The following table shows how you can redirect the three streams when calling a.out. Command Stdin Stdout Stderr a.out Keyboard Screen Screen a.out < Datafile Datafile Screen Screen a.out > Results Keyboard Results Screen a.out < Datafile > Results Datafile Results Screen a.out >& Allout Keyboard Allout Allout a.out < Datafile >& Allout Datafile Allout Allout (a.out > Results) >& Errors Keyboard Results Errors (a.out < Datafile > Results) >& Errors Datafile Results Errors Comp 162 Lab Notes Page 2 of 6 February 10, 2017
3 Example: stdin, stdout, stderr cat averages.c #include <stdio.h> // reads N followed by N integers. Outputs average. int main() int i, count, number, sum=0; scanf("%d",&count); if (count==0) fprintf(stderr,"error: Count is zero\n"); return; for (i=0; i<count; i++) scanf("%d",&number); sum+=number; printf("average of %d numbers is %5.3f\n",count,(float)sum/(float)count); psmith@redwood:~/comp162$ cat gooddata psmith@redwood:~/comp162$ cat baddata 0 psmith@redwood:~/comp162$ gcc averages.c psmith@redwood:~/comp162$ (./a.out < gooddata > goodresults ) >& errorlist psmith@redwood:~/comp162$ cat goodresults Average of 7 numbers is psmith@redwood:~/comp162$ cat errorlist psmith@redwood:~/comp162$ (./a.out < baddata > badresults ) >& errorlist psmith@redwood:~/comp162$ cat badresults psmith@redwood:~/comp162$ cat errorlist Error: Count is zero psmith@redwood:~/comp162$ exit Comp 162 Lab Notes Page 3 of 6 February 10, 2017
4 3. Command line arguments In general, the main function in a C program can have the following heading int main(int argc, char *argv[]) or int main(int argc, char **argv) When the program runs, the operating system: puts into argc (argument count) the number of tokens on the command line. This count includes the program name itself. Puts into the elements of array argv (argument vector) pointers to the texts of the tokens. Here is a simple program; it just echoes the components of the command line back to the standard output. Example #include <stdio.h> int main (int argc, char* argv[]) int i; printf("argc is: %d\n", argc); for (i=0; i<argc; i++) printf("argv [%d] is %s\n",i,argv[i]); Here is the compilation and a run of the program. hp9k2 22: gcc ctesta.c hp9k2 23: a.out one two three argc is: 4 argv [0] is a.out argv [1] is one argv [2] is two argv [3] is three Comp 162 Lab Notes Page 4 of 6 February 10, 2017
5 4. More pre-processor options The pre-processor runs before the compiler and processes lines beginning with #. Thus, it handles the #include lines. We can use #define to define symbols as in #define MAXMEM 4096 #define PI The pre-processor replaces instance of the symbol name by the corresponding number. For example, we could declare int memory[maxmem]. Also we can define symbols to control debugging as in the following example. #define DEBUG 1 main() int a[] = 2, 4, 3, -1, 7 ; int i,sum=0; for (i=0; i<5; i++) sum += a[i]; #ifdef DEBUG printf ("sum is now %d\n",sum); #endif printf("sum is %d\n", sum); The text between #ifdef and #endif is only included in the output from the preprocessor (and hence input to the compiler) if the symbol DEBUG is defined (ifdef) with a non-zero value. There is also #ifndef (if not defined) hp9k2 22: gcc ctestb.c hp9k2 23: a.out sum is now 2 sum is now 6 sum is now 9 sum is now 8 sum is now 15 sum is 15 To remove the debugging information from the input to the compiler we need only change the value of the symbol to 0 (or to omit its definition altogether) thus Comp 162 Lab Notes Page 5 of 6 February 10, 2017
6 #define DEBUG 0 main() int a[] = 2, 4, 3, -1, 7 ; int i,sum=0; for (i=0; i<5; i++) sum += a[i]; #ifdef DEBUG printf ("sum is now %d\n",sum); #endif printf("sum is %d\n", sum); Now when the program is compiled the debug statements are omitted hp9k2 26: gcc ctestb.c hp9k2 27: a.out sum is 15 You can probably see how debugging can also be controlled through command-line arguments. 5. Programs Program 1 is due today. Submit source code and testing results electronically. For program 2, breaking the solution into functions will help in development and testing. Think about setting up an index to the cellar perhaps using an array of structures. When testing the program, consider creating a file with a test sequence then use redirection as described in section 2 above. Comp 162 Lab Notes Page 6 of 6 February 10, 2017
Friday, September 16, Lab Notes. Command line arguments More pre-processor options Programs: Finish Program 1, begin Program 2 due next week
Friday, September 16, 2016 Lab Notes Topics for today Redirection of input and output Command line arguments More pre-processor options Programs: Finish Program 1, begin Program 2 due next week 1. Redirection
More informationBIL 104E Introduction to Scientific and Engineering Computing. Lecture 14
BIL 104E Introduction to Scientific and Engineering Computing Lecture 14 Because each C program starts at its main() function, information is usually passed to the main() function via command-line arguments.
More informationLecture 7: file I/O, more Unix
CIS 330: / / / / (_) / / / / _/_/ / / / / / \/ / /_/ / `/ \/ / / / _/_// / / / / /_ / /_/ / / / / /> < / /_/ / / / / /_/ / / / /_/ / / / / / \ /_/ /_/_/_/ _ \,_/_/ /_/\,_/ \ /_/ \ //_/ /_/ Lecture 7: file
More informationSU2017. LAB 1 (May 4/9) Introduction to C, Function Declaration vs. Definition, Basic I/O (scanf/printf, getchar/putchar)
SU2017. LAB 1 (May 4/9) Introduction to C, Function Declaration vs. Definition, Basic I/O (scanf/printf, getchar/putchar) 1 Problem A 1.1 Specification Write an ANSI-C program that reads input from the
More informationOverview (1A) Young Won Lim 9/14/17
Overview (1A) Copyright (c) 2009-2017 Young W. Lim. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later
More informationOverview (1A) Young Won Lim 9/9/17
Overview (1A) Copyright (c) 2009-2017 Young W. Lim. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later
More informationOverview (1A) Young Won Lim 9/25/17
Overview (1A) Copyright (c) 2009-2017 Young W. Lim. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later
More informationBasic and Practice in Programming Lab 10
Basic and Practice in Programming Lab 10 File (1/4) File management in C language FILE data type (strictly, data structure in C library) Three operational modes Read/Write/Append fopen A library function
More informationFile Access. FILE * fopen(const char *name, const char * mode);
File Access, K&R 7.5 Dealing with named files is surprisingly similar to dealing with stdin and stdout. Start by declaring a "file pointer": FILE *fp; /* See Appendix B1.1, pg. 242 */ header
More informationLesson 6.1: Structs. This declares a collection of two integer variables to denote the two coordinates of a point in a plane.
Lesson 6.1: Structs Programming in C Prof. Dr. Eike Best Dr. Elke Wilkeit October 12, 2002 1 struct point { 2 int x; 3 int y; 4 }; This declares a collection of two integer variables to denote the two
More informationFile IO and command line input CSE 2451
File IO and command line input CSE 2451 File functions Open/Close files fopen() open a stream for a file fclose() closes a stream One character at a time: fgetc() similar to getchar() fputc() similar to
More informationare all acceptable. With the right compiler flags, Java/C++ style comments are also acceptable.
CMPS 12M Introduction to Data Structures Lab Lab Assignment 3 The purpose of this lab assignment is to introduce the C programming language, including standard input-output functions, command line arguments,
More informationToday s Learning Objectives
Today s Learning Objectives 15-123 Systems Skills in C and Unix We will Review ints and modular arithmetic Learn basic Data types and Formats How Conditionals and loops work How Arrays are defined, accessed,
More informationCS 326 Operating Systems C Programming. Greg Benson Department of Computer Science University of San Francisco
CS 326 Operating Systems C Programming Greg Benson Department of Computer Science University of San Francisco Why C? Fast (good optimizing compilers) Not too high-level (Java, Python, Lisp) Not too low-level
More informationCOMP s1 Lecture 1
COMP1511 18s1 Lecture 1 1 Numbers In, Numbers Out Andrew Bennett more printf variables scanf 2 Before we begin introduce yourself to the person sitting next to you why did
More informationCSC UNIX System, Spring 2015
` CSC 352 - UNIX System, Spring 2015 Assignment 2, due by 11:59 on Friday March 6 via gmake turnitin. Dr. Dale E. Parson, http://faculty.kutztown.edu/parson The directory, source-file and makefile contents
More informationLab Exam 1 D [1 mark] Give an example of a sample input which would make the function
CMPT 127 Spring 2019 Grade: / 20 First name: Last name: Student Number: Lab Exam 1 D400 1. [1 mark] Give an example of a sample input which would make the function scanf( "%f", &f ) return -1? Answer:
More informationIntroduction to Computing Lecture 03: Basic input / output operations
Introduction to Computing Lecture 03: Basic input / output operations Assist.Prof.Dr. Nükhet ÖZBEK Ege University Department of Electrical & Electronics Engineering nukhet.ozbek@ege.edu.tr Topics Streams
More informationContents. A Review of C language. Visual C Visual C++ 6.0
A Review of C language C++ Object Oriented Programming Pei-yih Ting NTOU CS Modified from www.cse.cuhk.edu.hk/~csc2520/tuto/csc2520_tuto01.ppt 1 2 3 4 5 6 7 8 9 10 Double click 11 12 Compile a single source
More informationSoftware Development With Emacs: The Edit-Compile-Debug Cycle
Software Development With Emacs: The Edit-Compile-Debug Cycle Luis Fernandes Department of Electrical and Computer Engineering Ryerson Polytechnic University August 8, 2017 The Emacs editor permits the
More informationProgramming in C. Session 8. Seema Sirpal Delhi University Computer Centre
Programming in C Session 8 Seema Sirpal Delhi University Computer Centre File I/O & Command Line Arguments An important part of any program is the ability to communicate with the world external to it.
More informationAMCAT Automata Coding Sample Questions And Answers
1) Find the syntax error in the below code without modifying the logic. #include int main() float x = 1.1; switch (x) case 1: printf( Choice is 1 ); default: printf( Invalid choice ); return
More informationCS113: Lecture 7. Topics: The C Preprocessor. I/O, Streams, Files
CS113: Lecture 7 Topics: The C Preprocessor I/O, Streams, Files 1 Remember the name: Pre-processor Most commonly used features: #include, #define. Think of the preprocessor as processing the file so as
More informationLecture 03 Bits, Bytes and Data Types
Lecture 03 Bits, Bytes and Data Types Computer Languages A computer language is a language that is used to communicate with a machine. Like all languages, computer languages have syntax (form) and semantics
More informationLecture 8: Structs & File I/O
....... \ \ \ / / / / \ \ \ \ / \ / \ \ \ V /,----' / ^ \ \.--..--. / ^ \ `--- ----` / ^ \. ` > < / /_\ \. ` / /_\ \ / /_\ \ `--' \ /. \ `----. / \ \ '--' '--' / \ / \ \ / \ / / \ \ (_ ) \ (_ ) / / \ \
More informationBinghamton University. CS-211 Fall Input and Output. Streams and Stream IO
Input and Output Streams and Stream IO 1 Standard Input and Output Need: #include Large list of input and output functions to: Read and write from a stream Open a file and make a stream Close
More informationC programming basics T3-1 -
C programming basics T3-1 - Outline 1. Introduction 2. Basic concepts 3. Functions 4. Data types 5. Control structures 6. Arrays and pointers 7. File management T3-2 - 3.1: Introduction T3-3 - Review of
More informationmith College Computer Science CSC352 Week #7 Spring 2017 Introduction to C Dominique Thiébaut
mith College CSC352 Week #7 Spring 2017 Introduction to C Dominique Thiébaut dthiebaut@smith.edu Learning C in 2 Hours D. Thiebaut Dennis Ritchie 1969 to 1973 AT&T Bell Labs Close to Assembly Unix Standard
More informationWeek 2 Intro to the Shell with Fork, Exec, Wait. Sarah Diesburg Operating Systems CS 3430
Week 2 Intro to the Shell with Fork, Exec, Wait Sarah Diesburg Operating Systems CS 3430 1 Why is the Shell Important? Shells provide us with a way to interact with the core system Executes programs on
More informationAPT Session 4: C. Software Development Team Laurence Tratt. 1 / 14
APT Session 4: C Laurence Tratt Software Development Team 2017-11-10 1 / 14 http://soft-dev.org/ What to expect from this session 1 C. 2 / 14 http://soft-dev.org/ Prerequisites 1 Install either GCC or
More informationSubject: Fundamental of Computer Programming 2068
Subject: Fundamental of Computer Programming 2068 1 Write an algorithm and flowchart to determine whether a given integer is odd or even and explain it. Algorithm Step 1: Start Step 2: Read a Step 3: Find
More informationHigh-performance computing and programming Intro to C on Unix/Linux. Uppsala universitet
High-performance computing and programming Intro to C on Unix/Linux IT Uppsala universitet What is C? An old imperative language that remains rooted close to the hardware C is relatively small and easy
More informationBeyond this course. Machine code. Readings: CP:AMA 2.1, 15.4
Beyond this course Readings: CP:AMA 2.1, 15.4 CS 136 Spring 2018 13: Beyond 1 Machine code In Section 04 we briefly discussed compiling: converting source code into machine code so it can be run or executed.
More informationTHE C STANDARD LIBRARY & MAKING YOUR OWN LIBRARY. ISA 563: Fundamentals of Systems Programming
THE C STANDARD LIBRARY & MAKING YOUR OWN LIBRARY ISA 563: Fundamentals of Systems Programming Announcements Homework 2 posted Homework 1 due in two weeks Typo on HW1 (definition of Fib. Sequence incorrect)
More informationBasic C Programming (2) Bin Li Assistant Professor Dept. of Electrical, Computer and Biomedical Engineering University of Rhode Island
Basic C Programming (2) Bin Li Assistant Professor Dept. of Electrical, Computer and Biomedical Engineering University of Rhode Island Data Types Basic Types Enumerated types The type void Derived types
More informationFrom Java to C. Thanks to Randal E. Bryant and David R. O'Hallaron (Carnegie-Mellon University) for providing the basis for these slides
From Java to C Thanks to Randal E. Bryant and David R. O'Hallaron (Carnegie-Mellon University) for providing the basis for these slides 1 Outline Overview comparison of C and Java Good evening Preprocessor
More informationFriday, February 3, Lab Notes. Functions in C Arrays as parameters Pass by value vs pass by reference Programs 1 and 2
Friday, February 3, 2017 Lab Notes Topics for today File Input/Output Functions in C Arrays as parameters Pass by value vs pass by reference Programs 1 and 2 Submitting program assignments You can turn
More informationCSC209H Lecture 3. Dan Zingaro. January 21, 2015
CSC209H Lecture 3 Dan Zingaro January 21, 2015 Streams (King 22.1) Stream: source of input or destination for output We access a stream through a file pointer (FILE *) Three streams are available without
More informationComputer Science 322 Operating Systems Mount Holyoke College Spring Topic Notes: C and Unix Overview
Computer Science 322 Operating Systems Mount Holyoke College Spring 2010 Topic Notes: C and Unix Overview This course is about operating systems, but since most of our upcoming programming is in C on a
More informationmith College Computer Science CSC231 Bash Labs Week #10, 11, 12 Spring 2017 Introduction to C Dominique Thiébaut
mith College CSC231 Bash Labs Week #10, 11, 12 Spring 2017 Introduction to C Dominique Thiébaut dthiebaut@smith.edu Learning C in 4 Hours! D. Thiebaut Dennis Ritchie 1969 to 1973 AT&T Bell Labs Close to
More informationBinghamton University. CS-211 Fall Input and Output. Streams and Stream IO
Input and Output Streams and Stream IO 1 Standard Input and Output Need: #include Large list of input and output functions to: Read and write from a stream Open a file and make a stream Close
More information2009 S2 COMP File Operations
2009 S2 COMP1921 9. File Operations Oliver Diessel odiessel@cse.unsw.edu.au Last updated: 16:00 22 Sep 2009 9. File Operations Topics to be covered: Streams Text file operations Binary file operations
More informationComputational Methods of Scientific Programming Fall 2007
MIT OpenCourseWare http://ocw.mit.edu 12.010 Computational Methods of Scientific Programming Fall 2007 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms.
More informationLecture 10: Potpourri: Enum / struct / union Advanced Unix #include function pointers
....... \ \ \ / / / / \ \ \ \ / \ / \ \ \ V /,----' / ^ \ \.--..--. / ^ \ `--- ----` / ^ \. ` > < / /_\ \. ` / /_\ \ / /_\ \ `--' \ /. \ `----. / \ \ '--' '--' / \ / \ \ / \ / / \ \ (_ ) \ (_ ) / / \ \
More informationCS11001/CS11002 Programming and Data Structures (PDS) (Theory: 3-0-0)
CS11001/CS11002 Programming and Data Structures (PDS) (Theory: 3-0-0) Class Teacher: Pralay Mitra Department of Computer Science and Engineering Indian Institute of Technology Kharagpur A complete C program
More informationOregon State University School of Electrical Engineering and Computer Science. CS 261 Recitation 2. Spring 2016
Oregon State University School of Electrical Engineering and Computer Science CS 261 Recitation 2 Spring 2016 Outline Programming in C o Headers o Structures o Preprocessor o Pointers Programming Assignment
More informationModifiers. int foo(int x) { static int y=0; /* value of y is saved */ y = x + y + 7; /* across invocations of foo */ return y; }
Modifiers unsigned. For example unsigned int would have a range of [0..2 32 1] on a 32-bit int machine. const Constant or read-only. Same as final in Java. static Similar to static in Java but not the
More informationIntermediate Programming, Spring 2017*
600.120 Intermediate Programming, Spring 2017* Misha Kazhdan *Much of the code in these examples is not commented because it would otherwise not fit on the slides. This is bad coding practice in general
More informationCSCI-243 Exam 1 Review February 22, 2015 Presented by the RIT Computer Science Community
CSCI-243 Exam 1 Review February 22, 2015 Presented by the RIT Computer Science Community http://csc.cs.rit.edu History and Evolution of Programming Languages 1. Explain the relationship between machine
More informationPrinceton University. Testing. Computer Science 217: Introduction to Programming Systems
Princeton University Computer Science 217: Introduction to Programming Systems Testing On two occasions I have been asked [by members of Parliament!], Pray, Mr. Babbage, if you put into the machine wrong
More informationPrograms. Function main. C Refresher. CSCI 4061 Introduction to Operating Systems
Programs CSCI 4061 Introduction to Operating Systems C Program Structure Libraries and header files Compiling and building programs Executing and debugging Instructor: Abhishek Chandra Assume familiarity
More informationCOMsW Introduction to Computer Programming in C
OMsW 1003-1 Introduction to omputer Programming in Lecture 9 Spring 2011 Instructor: Michele Merler http://www1.cs.columbia.edu/~mmerler/comsw1003-1.html 1 Are omputers Smarter than Humans? Link http://latimesblogs.latimes.com/technology/2011/02/ibms-watson-on-jeopardy-computer-takes-big-leadover-humans-in-round-2.html
More informationThe following program computes a Calculus value, the "trapezoidal approximation of
Multicore machines and shared memory Multicore CPUs have more than one core processor that can execute instructions at the same time. The cores share main memory. In the next few activities, we will learn
More informationCSE 333 Autumn 2014 Midterm Key
CSE 333 Autumn 2014 Midterm Key 1. [3 points] Imagine we have the following function declaration: void sub(uint64_t A, uint64_t B[], struct c_st C); An experienced C programmer writes a correct invocation:
More informationLaboratory 2: Programming Basics and Variables. Lecture notes: 1. A quick review of hello_comment.c 2. Some useful information
Laboratory 2: Programming Basics and Variables Lecture notes: 1. A quick review of hello_comment.c 2. Some useful information 3. Comment: a. name your program with extension.c b. use o option to specify
More informationTutorial 1: Introduction to C Computer Architecture and Systems Programming ( )
Systems Group Department of Computer Science ETH Zürich Tutorial 1: Introduction to C Computer Architecture and Systems Programming (252-0061-00) Herbstsemester 2012 Goal Quick introduction to C Enough
More informationC Concepts - I/O. Lecture 19 COP 3014 Fall November 29, 2017
C Concepts - I/O Lecture 19 COP 3014 Fall 2017 November 29, 2017 C vs. C++: Some important differences C has been around since around 1970 (or before) C++ was based on the C language While C is not actually
More informationSystem Programming. Introduction to Unix
Content : by Dr. B. Boufama School of Computer Science University of Windsor Instructor: Dr. A. Habed adlane@cs.uwindsor.ca http://cs.uwindsor.ca/ adlane/60-256 Content Content 1 Introduction 2 3 Introduction
More informationEXTERNAL TESTING. Princeton University Computer Science 217: Introduction to Programming Systems. Why Test? Testing. Why Test? Why Test?
Princeton University Computer Science 217: Introduction to Programming Systems Testing Why Test? It's hard to know if a (large) program works properly Ideally: Automatically prove that a program is correct
More information1. The Mac Environment in SIE 1222
Friday, September 1, 2017 Lab Notes Topics for today The Mac Environment C (and Unix) Notes on C Part 1 Program 1 1. The Mac Environment in SIE 1222 a. Turning on the Mac If the Mac is in sleep mode you
More informationHomework 2 Answers. Due Date: Monday, April 29, 2002, at 11:59PM Points: 100
Homework 2 Answers Due Date: Monday, April 29, 2002, at 11:59PM Points: 100 UNIX System 1. (10 points) What program is running as process #1? Type ps ax and look for the process with a PID of 1. Then look
More informationComputer Programming. The greatest gift you can give another is the purity of your attention. Richard Moss
Computer Programming The greatest gift you can give another is the purity of your attention. Richard Moss Outline Modular programming Modularity Header file Code file Debugging Hints Examples T.U. Cluj-Napoca
More informationENG120. Misc. Topics
ENG120 Misc. Topics Topics Files in C Using Command-Line Arguments Typecasting Working with Multiple source files Conditional Operator 2 Files and Streams C views each file as a sequence of bytes File
More informationComputer Science 2500 Computer Organization Rensselaer Polytechnic Institute Spring Topic Notes: C and Unix Overview
Computer Science 2500 Computer Organization Rensselaer Polytechnic Institute Spring 2009 Topic Notes: C and Unix Overview This course is about computer organization, but since most of our programming is
More informationCpSc 1010, Fall 2014 Lab 10: Command-Line Parameters (Week of 10/27/2014)
CpSc 1010, Fall 2014 Lab 10: Command-Line Parameters (Week of 10/27/2014) Goals Demonstrate proficiency in the use of the switch construct and in processing parameter data passed to a program via the command
More informationCSCI-243 Exam 2 Review February 22, 2015 Presented by the RIT Computer Science Community
CSCI-43 Exam Review February, 01 Presented by the RIT Computer Science Community http://csc.cs.rit.edu C Preprocessor 1. Consider the following program: 1 # include 3 # ifdef WINDOWS 4 # include
More informationProgramming and Data Structure
Programming and Data Structure Sujoy Ghose Sudeshna Sarkar Jayanta Mukhopadhyay Dept. of Computer Science & Engineering. Indian Institute of Technology Kharagpur Spring Semester 2012 Programming and Data
More informationWorksheet 4 Basic Input functions and Mathematical Operators
Name: Student ID: Date: Worksheet 4 Basic Input functions and Mathematical Operators Objectives After completing this worksheet, you should be able to Use an input function in C Declare variables with
More informationCSE 124 Discussion (10/3) C/C++ Basics
CSE 124 Discussion (10/3) C/C++ Basics Topics - main() function - Compiling with gcc/makefile - Primitives - Structs/Enums - Function calls/loops - C++ Classes/stdtl - Pointers/Arrays - Memory allocation/freeing
More informationIntroduction to Supercomputing
Introduction to Supercomputing TMA4280 Introduction to UNIX environment and tools 0.1 Getting started with the environment and the bash shell interpreter Desktop computers are usually operated from a graphical
More informationSymbols, Compilation Units, and Pre-Processing
Symbols, Compilation Units, and Pre-Processing Antonio Carzaniga Faculty of Informatics Università della Svizzera italiana March 6, 2017 Outline Compilation process Symbols: compilation units and linking
More informationCSE 303: Concepts and Tools for Software Development
CSE 303: Concepts and Tools for Software Development Hal Perkins Winter 2009 Lecture 7 Introduction to C: The C-Level of Abstraction CSE 303 Winter 2009, Lecture 7 1 Welcome to C Compared to Java, in rough
More informationCpSc 1011 Lab 5 Conditional Statements, Loops, ASCII code, and Redirecting Input Characters and Hurricanes
CpSc 1011 Lab 5 Conditional Statements, Loops, ASCII code, and Redirecting Input Characters and Hurricanes Overview For this lab, you will use: one or more of the conditional statements explained below
More informationToday s class. Review of more C Operating system overview. Informationsteknologi
Today s class Review of more C Operating system overview Monday, September 10, 2007 Computer Systems/Operating Systems - Class 3 1 Review of more C File handling Open a file using fopen Returns a file
More informationOutline. Lecture 1 C primer What we will cover. If-statements and blocks in Python and C. Operators in Python and C
Lecture 1 C primer What we will cover A crash course in the basics of C You should read the K&R C book for lots more details Various details will be exemplified later in the course Outline Overview comparison
More informationPrinceton University COS 333: Advanced Programming Techniques A Subset of C90
Princeton University COS 333: Advanced Programming Techniques A Subset of C90 Program Structure /* Print "hello, world" to stdout. Return 0. */ { printf("hello, world\n"); -----------------------------------------------------------------------------------
More information1. The Mac Environment in Sierra Hall 1242
Wednesday, August 26, 2015 Lab Notes Topics for today The Mac Environment C (and Unix) Notes on C Part 1 Program 1 1. The Mac Environment in Sierra Hall 1242 a. Turning on the Mac If the Mac is in sleep
More informationEECS2031 Software Tools
EECS2031 Software Tools SU 2014-2015 The Course EECS2031 Software Tools Lecture: R N203. Tuesdays 18:00 20:00 Labs: LAS (CSEB) 1006 Lab 01 Tuesdays 16:00 18: 00 Lab 02 Wednesdays 17:00 19:00 Course website:
More informationch = argv[i][++j]; /* why does ++j but j++ does not? */
CMPS 12M Introduction to Data Structures Lab Lab Assignment 4 The purpose of this lab assignment is to get more practice programming in C, including the character functions in the library ctype.h, and
More informationAn Ungentle Introduction to C
Warum C? - Sicherheit auf allen Systemschichten Applikationen Hilfssysteme BS-Werkzeuge BS-Kern HW Evtl. Hochsprachen Skripte C Assembler - je tiefer die kompromittierte Schicht, umso größer der Schaden
More informationCSC209F Midterm (L5101) Fall 1998 University of Toronto Department of Computer Science
CSC209F Midterm (L5101) Fall 1998 University of Toronto Department of Computer Science Date: November 2 nd, 1998 Time: 6:10 pm Duration: 50 minutes Notes: 1. This is a closed book test, no aids are allowed.
More information8. Characters, Strings and Files
REGZ9280: Global Education Short Course - Engineering 8. Characters, Strings and Files Reading: Moffat, Chapter 7, 11 REGZ9280 14s2 8. Characters and Arrays 1 ASCII The ASCII table gives a correspondence
More informationGoals of this Lecture
I/O Management 1 Goals of this Lecture Help you to learn about: The Unix stream concept Standard C I/O functions Unix system-level functions for I/O How the standard C I/O functions use the Unix system-level
More informationArrays and Pointers (part 2) Be extra careful with pointers!
Arrays and Pointers (part 2) EECS 2031 22 October 2017 1 Be extra careful with pointers! Common errors: l Overruns and underruns Occurs when you reference a memory beyond what you allocated. l Uninitialized
More informationCSCI 4210 Operating Systems CSCI 6140 Computer Operating Systems Homework 3 (document version 1.2) Multi-threading in C using Pthreads
CSCI 4210 Operating Systems CSCI 6140 Computer Operating Systems Homework 3 (document version 1.2) Multi-threading in C using Pthreads Overview This homework is due by 11:59:59 PM on Tuesday, April 10,
More informationMain differences with Java
Signals, Instruments, and Systems W2 C Programming (continued) C Main differences with Java C is NOT object oriented. (C++ is OO) C code is directly translated into binary that can be directly executed
More information211: Computer Architecture Summer 2016
211: Computer Architecture Summer 2016 Liu Liu Topic: C Programming Data Representation I/O: - (example) cprintf.c Memory: - memory address - stack / heap / constant space - basic data layout Pointer:
More informationI/O Management! Goals of this Lecture!
I/O Management! 1 Goals of this Lecture! Help you to learn about:" The Unix stream concept" Standard C I/O functions" Unix system-level functions for I/O" How the standard C I/O functions use the Unix
More informationI/O Management! Goals of this Lecture!
I/O Management! 1 Goals of this Lecture! Help you to learn about:" The Unix stream concept" Standard C I/O functions" Unix system-level functions for I/O" How the standard C I/O functions use the Unix
More informationArrays and Pointers (part 2) Be extra careful with pointers!
Arrays and Pointers (part 2) CSE 2031 Fall 2011 23 October 2011 1 Be extra careful with pointers! Common errors: Overruns and underruns Occurs when you reference a memory beyond what you allocated. Uninitialized
More informationProblem Set 1: Unix Commands 1
Problem Set 1: Unix Commands 1 WARNING: IF YOU DO NOT FIND THIS PROBLEM SET TRIVIAL, I WOULD NOT RECOMMEND YOU TAKE THIS OFFERING OF 300 AS YOU DO NOT POSSESS THE REQUISITE BACKGROUND TO PASS THE COURSE.
More informationStream Model of I/O. Basic I/O in C
Stream Model of I/O 1 A stream provides a connection between the process that initializes it and an object, such as a file, which may be viewed as a sequence of data. In the simplest view, a stream object
More informationApplied Programming and Computer Science, DD2325/appcs15 PODF, Programmering och datalogi för fysiker, DA7011
Applied Programming and Computer Science, DD2325/appcs15 PODF, Programmering och datalogi för fysiker, DA7011 Autumn 2015 Lecture 3, Simple C programming M. Eriksson (with contributions from A. Maki and
More informationCSE 303 Lecture 8. Intro to C programming
CSE 303 Lecture 8 Intro to C programming read C Reference Manual pp. Ch. 1, 2.2-2.4, 2.6, 3.1, 5.1, 7.1-7.2, 7.5.1-7.5.4, 7.6-7.9, Ch. 8; Programming in C Ch. 1-6 slides created by Marty Stepp http://www.cs.washington.edu/303/
More informationPrinceton University Computer Science 217: Introduction to Programming Systems. Testing
Princeton University Computer Science 217: Introduction to Programming Systems Testing Fall 2017 1 Software engineering method 1 1. Write program 2. Upload program to customer 3.... program has bugs, useless...
More informationProgramming & Data Structure
File Handling Programming & Data Structure CS 11002 Partha Bhowmick http://cse.iitkgp.ac.in/ pb CSE Department IIT Kharagpur Spring 2012-2013 File File Handling File R&W argc & argv (1) A file is a named
More informationSummary of Last Class. Processes. C vs. Java. C vs. Java (cont.) C vs. Java (cont.) Tevfik Ko!ar. CSC Systems Programming Fall 2008
CSC 4304 - Systems Programming Fall 2008 Lecture - II Basics of C Programming Summary of Last Class Basics of UNIX: logging in, changing password text editing with vi, emacs and pico file and director
More informationOutline. Computer programming. Debugging. What is it. Debugging. Hints. Debugging
Outline Computer programming Debugging Hints Gathering evidence Common C errors "Education is a progressive discovery of our own ignorance." Will Durant T.U. Cluj-Napoca - Computer Programming - lecture
More informationBasic C Program: Print to stdout. Basic C Program. Basic C Program: Print to stdout. Header Files. Read argument and print. Read argument and print
CSC 4304 - Systems Programming Fall 2010 Lecture - II Basics of C Programming Summary of Last Class Basics of UNIX: logging in, changing password text editing with vi, emacs and pico file and directory
More informationLecture 7: Files. opening/closing files reading/writing strings reading/writing numbers (conversion to ASCII) command line arguments
Lecture 7: Files opening/closing files reading/writing strings reading/writing numbers (conversion to ASCII) command line arguments Lecture 5: Files, I/O 0IGXYVI*MPIW 0 opening/closing files reading/writing
More information