abs() - Utility Function

How is Utility function "abs()" used in C++?
How to find the absolute value of a given number?

Explanation

abs() is a Utility Function that returns the absolute value for the given number. For long, double values the function returns the same results as "labs()", "fabs()".

Syntax to find Absolute Value:

int abs(int num);
long abs (long num);
double abs(double num);

Example :

#include <stdlib.h>
#include <stdio.h>
int main ()
{
int a,b,c,d;
a=45;
b=abs(a);
c=-15;
d=abs(c);
printf ("The absolute value of %d is:: %d\n",a,b);
printf ("The absolute value of %d is:: %d\n",c,d);
return 0;
}

Result :

The absolute value of 45 is:: 45
The absolute value of -15 is:: 15
Abnormal program termination

In the above example abs() is used to find the absolute value of integers "45","-15".

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