Overview of C Increment and Decrement Operator with Example

Increment operator:

• var ++ => Indicates post increment. That is use the value of var first and then increment.
• ++ var => indicates pre increment.That is the value of var must be incremented before it is used. 

 Example:

 

#include<stdio.h>

void main()

{

int x , y;

x=5;

y=10;

printf(" x=%d\n, x++");

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

}

Output:

  x=5

  y=11

Decrement operator:

• --var => indicates decrement the value of var first and then use it.
• var-- => indicates use the value of var first and then decrement it.

Example:

#include<stdio.h>

void main()

{

int x , y;

x=5;

y=10;

printf(" x=%d\n, --x");

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

} 

Output:

  x=4

  y=10