C Assignment Operators

C assignment operators are used to assigned the value of a variable or expression to a variable. The syntax of assignment operators is:

1	var = expression;

2	var = var;

Beside = operator, C programming language supports other short hand format which acts the same assignment operator with additional operator such as +=, -=, *=, /=, %=.

1	var +=expression; //means

2	var = var + expression;

Each assignment operator has a priority and they are evaluated from right to left based on its priority. Here is assignment operator and its priority: =, +=, -=, *=, /=, %=.

A simple C program to demonstrate assignment operators:

01	#include <stdio.h>

02	/* a program demonstrates C assignment operator */

03	void main(){

04	int x = 10;

05

06	/* demonstrate = operator */

07	int y = x;

08	printf("y = %d\n",y);

09

10	/* demonstrate += operator */

11

y += 10;

12	printf("y += 10;y = %d\n",y);

13	/* demonstrate -= operator */

14

y -=5;

15	printf("y -=5;y = %d\n",y);

16

17	/* demonstrate *= operator */

18

y *=4;

19	printf("y *=4;y = %d\n",y);

20

21	/* demonstrate /= operator */

22

y /=2;

23	printf("y /=2;y = %d\n",y);

24

25

}

Here is the output:

y = 10
y += 10;y = 20
y -=5;y = 15
y /=2;y = 30
y *=4;y = 60

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Posted in: C Language