abs : <stdlib.h> library function

The function int abs(int x); returns the absolute value of an integer x.

Function prototype of abs

int abs(int x);
  • x : This is an integer to convert to an absolute value.

Return value of abs

This function returns absolute value of an integer represented by x.

C program to show the use of abs function

The following program shows the use of abs function to find absolute value of an integer.

#include <stdio.h>
#include <stdlib.h>

int main(){
    int value;
    printf("Enter a number\n");
    scanf("%d", &value);
    printf("Absolute value of %d = %d\n", value, abs(value));
    
    return 0;
}

Program Output
Enter a number
9
Absolute value of 9 = 9
Enter a number
-9
Absolute value of -9 = 9
Enter a number
0
Absolute value of 0 = 0