programming in c-Basics

1. Ms.K.Banupriya
Assistant Professor
Department of Information Technology
Bon Secours College for Women, Thanjavur.

2. C is the programming language
developed by dennis M . Ritchie at Bell
lab in USA.
‘c’ is a middle level language .
UNIX operating system was written in
‘c’ language.
‘c’ language is used as most common
platform for developing system
programs.

3.  It is one of the most popular computer
language today because it is a
structural,high-level machine
independent language.
It allows the developes to develop
programs without worrying about the
hardware about the platform where
they will be implemented.

5.  Programs written in c are efficient and fast.
 There are only 32 keywords in ANSIC and
its strength lies in this built-in-function.
 C is highly portable.
 C language is well suited for structured
programming .
 Another important feature of c is its ability to
extend itself.

6. #include<stdio.h>
#include<math.h>
Void main()
{
Clrscr()
int a,b,c,
printf(“Enter the value for a&b”);
Scanf(%d%d”,&a&b);
C=a+b;
Printf(“The addition result is”
getch();
}

7.  c operator can be classified of a number
categries.These are
1.arithmetic operator
2.Relation operator
3. Logical operator
4. assingment operator
5.increment &decrement opertor
6.condition operator
7. Bitwise operator
8. special operator

8.  arithmetic operator is used to
performing mathematical operations
such as addition subtraction
multiplication , division ,modules,.
operator meaning
+ Addition
_ Subtraction
* Multiplication
/ Division
% Module

9. #include<stdio.h>
#inlude<conio.h>
Void main( )
{
int a,b;
Clrscr( );
Printf(“Enter the two value:n”);
Scanf(“%d%d”,&a&b);
Printf(“addition:n”,a+b);
Printf(“subtraction:n”,a-b);
Printf(“multiplicationm:n”,a*b);
Printf(“division:n”,a/b);
Printf(“module division:/n”,a%b);
getch();
}

10.  a relational operator checks the relational between two
operands . If the relation is true ,it returns 1; if the relation
is false , it returns value 0.relational operator are used in
decision making and loops
operator meaning
< Is less than
<= Is less than or equal to
> Greater than
>= Is greater than or equal to
== Is equal to
!= Is not equal to

11. #include<stdio.h>
#include<conio.h>
Void main( )
{
int a,b;
clrscr( );
Printf(Enter the two value:n”);
Scanf(“%d%d,&a&b);
If(a>b)
{
Printf(“A is the greater than:n”)
}
Else
{
Printf(“A is the greater than :/n”)
}
Getch( )
}

12.  We use logical operator to perform
various logical operations on any
set of given expressions .
logical operator meaning
&& Logical AND
|| Logical OR
! Logical NOT

13. #include<stdio.h>
#include<conio.h>
Void main( )
{
int a=40,b=20,c=30,D=40;
clrscr( );
If(a>b&&c<d)
Printf(A is greater than B OR D is greater than C”);
Else
Printf(logical OR function does not satisfied ”)
Getch( )
}

14.  Assignment operator are used to assigning value to a
variable.
 Left side operand of the assignment operator is a variable
and right side operand of the assignment operator is a
value
compound
assignment
equivalent
assignment
A>>=B A=A>>B
A&=58 A=A&58
A|=B A=A|B
A^=B A=A^B
A/=(B+C) A=A/(B+C)
A%=(X%10) A=A%(X%10)

15. PROGRAM:
#include <stdio.h>
#include<conio.h>
Void main( )
{
Int a=10,b=20
Clrscr( );
Printf(“A%d”,a);
Printf(“n B%d”,b)
a=a+b
Printf(“nA%d”,a);
Getch( )
}

16.  ++ and - - operators are called increment and decrement
operators.
 they are unary operator needing only one operand.hence
++ as well - - operand can appear before or after the
operand with same effect.
compound
assignment
equivalent
assignment
A>>=B A=A>>B
A&=58 A=A&58
A|=B A=A|B
A^=B A=A^B
A/=(B+C) A=A/(B+C)
A%=(X%10) A=A%(X%10)

17. PROGRAM:
#include<stdio.h>
#include<conio.h>
Void main ( )
{
Int a=10,
Clrscr( )
Printf(“A++ is ,%d”,a++);
Printf(“n A is ,%d”, a);
Getch( );
}

18.  conditional operator is a single programming
statement ,while the if-else statement is a
programming block in which statements come
under the pranthesis.
exp 1,exp 2, exp 3
 This operator is used as a pointer to a
variable .
comma operator
size of the operator

19.  bitwise operator are character that represent
action(bitwise operation) to be performed on single bits .
 they operate at the binary level and perform operation on
bit patterns that involve the manipulation of individual
bits .
operator meaning
& bitwise AND
| Bitwise OR
^ Bitwise exclisive OR
<< Left shift
>> Right shift
~ One’s complement

20. PROGRAM:
#include<stdio.h>
#<inlude<conio.h>
Void main( )
{
Int test=1;
Int number;
Printf(“input a numbern”)
Scanf(“%d”,& number);
While(number!=-1)
{
If(number&test)
Printf(“Number is odd n”);
Else
Printf(“Number is even n”);
Printf(“input a numbern”);
Scanf(“%d”,&number);
}
}