C/math.h/fmod

fmod: returns the remainder of a/b

<source lang="cpp">

//Declaration: float fmodf(float a, float b);

              double fmod(double a, double b); 
              long double fmodl(long double a, long double b);  

 
 #include <math.h>
 #include <stdio.h>
 int main(void)
 {
   printf("%1.1f", fmod(10.0, 3.0));
   return 0;
 }
        
       /*1.0*/ 
          
      </source>