### abs -- Calculate Integer Absolute Value

Format

>     #include <stdlib.h>
>     int abs(int n);

Language Level: ANSI, POSIX, XPG4, Extension
abs returns the absolute value of an integer argument n.

Return Value
There is no error return value. The result is undefined when the absolute value of the argument cannot be represented as an integer.

The value of the minimum allowable integer is defined by -INT_MAX in the <limits.h> include file.

Example
This example calculates the absolute value of an integer x and assigns it to y.

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

    int main(void)
    {
       int x = -4, y;

       y = abs(x);
       printf("The absolute value of x is %d.\n", y);
       return 0;

       /**********************************************
          The output should be:
          The absolute value of x is 4.
       **********************************************/
    }

_cabs -- Calculate Absolute Value of Complex Number
fabs -- Calculate Floating-Point Absolute Value
labs -- Calculate Absolute Value of Long Integer
<limits.h>
<stdlib.h>