Assignment Operator in C

Using assignment operators, we can assign value to the variables.

Equality sign (=) is used as an assignment operator in C.

Example

int var = 5;

Here, value 5 has assigned to the variable var.

Example

#include<stdio.h>

int main()
{
    int a = 10;
    int b = a;

    printf("a = %d \t b = %d\n",a,b);

    return 0;
}

Here, value of a has assigned to the variable b. Now, both a and b will hold value 10.

Basically, the value of right-side operand will be assigned to the left side operand.

Pictorial Explanation

Compound assignment operators

Operator	Meaning	Example (a = 10 , b = 5)
+=	L=L+R add left and right operand and assign result in left	a+=b;same as a=a+b after execution a will hold 15
-=	L=L-R subtract right operand from left operand and assign result in left	a-=b;same as a=a-b after execution a will hold 5
*=	L=L*R multiply both right and left operand and store result in left	*a=b;*same as a=ab after execution a will hold 50
/=	L=L/R divides left operand by right operand and store result in left	a/=b;same as a=a/b after execution a will hold 2
%=	L=L%R After left and right operand division, the remainder will be stored in left	a%=b;same as a=a%b after execution a will hold 0

Sample Program

Example

#include<stdio.h>

int main()
{
    int a = 10, b = 5;

    a+=b; // same as a=a+b
    printf("value of a+b = %d\n",a); // a will hold the result

    return 0;
}