Lecture01 (introduction to c programming)

CSE-1121 (Structured Programming Language)
Department of Computer Science and Engineering
DUET, Gazipur-1700

• Md. Shohidul Islam
Lecturer, Department of CSE

• Md. Mahbub Alam
Lecture, Department of CSE

June, 2010(EVEN SEMESTER)

Md. Mahbub Alam Structured Programming Language 1
(CSE-1121)

Text Books and Other Class Room Material

Text Books
1. Programming in ANSI C (3rd Edition) by E Balagurusamy
2. C – The Complete Reference (4th Edition) by Herbert Schildt
3. C – How To Program (4th Edition) by Deitel & Deitel

Useful Links
• http://www.lysator.liu.se/c/bwk-tutor.html
• http://www.cs.cf.ac.uk/Dave/C

(CSE-1121)

Course Outline
Introduction to C programming
Constants, variable & data types
C Operators & expressions
Managing I/O operations in C
C Control structure
C Arrays
C Characters and Strings
C Functions
C Pointers
Structure and Union in C
Dynamic Memory Allocation in C
File processing in C
Graphics programming in C
Built in functions in C

(CSE-1121)

Class Hour
Theory: 2 lecture per week (Sunday & Tuesday 08:50 AM – 09:40 AM )
Room No - 314
Lab: Tuesday 11:00 AM – 01:30 PM & 02:30 PM – 05:00 PM
Room No – Software Lab

How Contact With Me
Room No : 332
Mobile : +8801672917778
Email : emahbub.cse@gmail.com

(CSE-1121)

Marks Distribution
Total Mark 300
Class Attendance 10%
Class Test/Quiz Test/Assignment 20%
Final Exam 70%
Total 100%

Grading System
Numerical Grade Letter Grade Grade point
80% or above A+ (A Plus) 4.00
75% to less than 80% A (A Regular ) 3.75
70% to less than 75% A- (A Minus) 3.50
65% to less than 70% B+ (B Plus) 3.25
60% to less than 65% B (B Regular) 3.00
55% to less than 60% B- (B Minus) 2.75
50% to less than 55% C+ (C Plus) 2.50
45% to less than 50% C (C Regular) 2.25
40% to less than 45% D 2.00
Less than 40% F 0.00

(CSE-1121)

Lecture01 (Introduction to C programming )
June 13, 2010
Today's Outline
History of C
Importance of C
Basic Structure of C program
“Hello world program”
C program development environment

(CSE-1121)

History of C
C evolved from two previous programming languages, BCPL and B
by “Dennis Ritchie” at Bell Laboratories on DEC PDP-11 machine
in 1972.
- In 1967, BCPL (Basic Combined Programming Language) was developed by
Martin Richards as a language for writing operating system software &
compilers.
- In 1970, Ken Thompson developed B using many features of BCPL and early
versions of UNIX operating system at Bell Laboratories on DEC PDP-7
machine.
Initially, C widely known as the development language of the UNIX
operating system but today virtually all new major operating systems
are written in C and/or C++.
By the late 1970's, C had evolved into what is now referred as
"Traditional C“.
(CSE-1121)

History of C (Cont.)
Rapid expansion of C over various types of computers led to many
variations of the language that were similar but often incompatible
which was serious problem for program developers who needed to
develop platform independent code.
A technical committee (X3J11) was created under ANSI to define a
standard version of C. In 1989, the committee approved a standard
version of which was known as ANSI C (C89).
In 1990, this standard was approved by ISO referred to as
ANSI/ISO Standard C which was updated in 1999 referred to as
C99.

(CSE-1121)

Why teach C?
• C is small (only 32 keywords).
• C has rich set of built-in functions and support variety of data
types & operators.
• C is highly portable (Machine independent).
• C is structured.
• C has ability to extend itself.
• C is stable (the language doesn’t change much).
• C is quick running (code written in c is efficient & fast).
• C is the basis for many other languages (Java, C++, Perl etc).
• C is a Programmers Language.

It may not feel like it but C is one of the easiest language to
learn.

(CSE-1121)

Basic Structure of C Program
Documentation Section Set of comments lines( prg. name, author & other info)
Link Section Link the program with functions of system library
Definition Section Defines all symbolic constants
Global Declaration Section Declares global variables & user-defined functions
main() Function Section
Every program must have main() function. Program
{ execution begins at opening braces & ends at closing
} braces of main() function.
Subprogram Section
function1()
{ Definition of all user-defined functions
}
::::::::::
functionN()
{
}

(CSE-1121)

Hello World Program

Comments

/* My first C program which prints Hello World */

#include <stdio.h>
Main() function begin here
int main ()
{ Library function
printf("Hello World!n");
return 0;
} Return 0 from main means our program
finished without errors

Main() function ends here

(CSE-1121)

Typical C program
development environment

(CSE-1121)

Any Question?

(CSE-1121)

Thank You All

(CSE-1121)

Lecture01 (introduction to c programming)

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