What is is fabs function in C programming and how can it be used?

Answer 1

fabs function can be found in math.h header and you need to include it if you wish to use it .

fabs is used to find absolute value of floating point values.

example:

#include <stdio.h>

#incude <math.h>

int main(void)

{

double x;

x = -3.0L;

printf("%lf", fabs(x));

return(0);

}