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fabs() - Find Absolute Value - C++ Mathematical Function Tutorial

fabs() - Mathematical Function

How is Mathematical Function "fabs()" used in C++?
How to find the absolute value of a number ?


fabs() is a Mathematical Function that returns the absolute value of the given argument.

Syntax to find the absolute value:

float exp( float num);
double exp( double num);
long double exp( long double num);

Example :

#include <stdio.h>
#include <math.h>
int main ()
printf ("The absolute value of
2.5426 is %lf\n", fabs ( 2.5426) );
printf ("The absolute value of
-8.6 is %lf\n", fabs (-8.6) );
return 0;

Result :

The absolute value of 2.5426 is 2.542600
The absolute value of -8.6 is 8.600000

In the above example fabs() is used to find the absolute value of "2.542600" and "-8.6".

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