C isless function tells which value is smaller

Syntax

C isless function has the following syntax.

Header

C isless function is from header file math.h.

Description

C isless function returns nonzero if a is less than b.

Example

The following code can tell which value is smaller by using C isless function.

#include <stdio.h>
#include <math.h>
//  w  w w  . j  av  a2  s  . c om
int main(void)
{
  printf("%d", isless(1.0, 2.0));
  printf("%d", isless(1.0, 1.0));
  printf("%d", isless(2.0, 1.0));
  return 0;
}

The code above generates the following result.