C LANGUAGE

C LANGUAGE

 C is a Programming Language developed by "Dennis Ritchie" at
AT&T Bell Labaratory in 1970's.
 c is middle level language.
 Compiler-> converts into binary digits,
It reads whole program

Advantages:

 Easy To Learn
 Simple
 Portable
 Flexible

Structure Of Program:

//->single line comment

/*.............*/->multiline comment

1.header file:

# include<stdio.h>

#include<conio.h>

#->preprocessor directive



2.void main() (or) int main()

{

----- //body of the loop

, -----

}

3.printf("hello"); ->for display the output

4.scanf("%d",&a); ->for get the input

5.getch(); ->to get the character (OR) return 0;

6.\n ,\t ->new line, tab space

7.clrscr(); ->to clear the screen

Data Types:

1.int -2bytes

2.char -1bytes

3.float -4bytes

4.double - 8bytes

5.long double -10 bytes

Variables:

a,b,c etc.....

Declaration:

int a;

float c;

char name;

Initialization:

, int a=10;

float c=20.5;

char name='a';

Operators:

1.Arithmetic operators +,-,*,/,%

2.Increment and Decrement operators

pre increment ++a;

post increment a++;

pre decrement --a;

post decrement a--;

3. Relational operators

== equal

!= not equal

> greater than

< less than

>= greater than or equal

<= less than or equal

4.Logical operators

&& logical AND

|| logical OR