تابع ‎isgreater()‎‎ در ‎C++‎

/* isgreater example */
#include <stdio.h>/* printf */
#include <math.h>/* isgreater, log */

int main ()
{
double result;
result = log (10.0);
if (isgreater(result,0.0))
printf ("log(10.0) is positive");
else
printf ("log(10.0) is not positive");
return 0;
}