C – abs() function

• abs( ) function in C returns the absolute value of an integer. The absolute value of a number is always positive. Only integer values are supported in C.
• “stdlib.h” header file supports abs( ) function in C language. Syntax for abs( ) function in C is given below.

int abs ( int n );

Example program for abs( ) function in C:

#include <stdio.h>
#include <stdlib.h>
int main()
{
   int m = abs(200);     // m is assigned to 200
   int n = abs(-400);    // n is assigned to -400

   printf("Absolute value of m = %d\n", m);
   printf("Absolute value of n = %d \n",n);
   return 0;
}

Output:

Absolute value of m = 200 Absolute value of n = 400

Other inbuilt arithmetic functions in C: