Program to calculate simple interest in c program

Program to calculate simple interest

yaha per * ye dena jaruri he warna error ayega or mene float use kiya he

#include 

int
main ()
{
  float p, t, r, si;
  printf ("Enter p");
  scanf ("%f", &p);

  printf ("Enter t");
  scanf ("%f", &t);

  printf ("Enter r");
  scanf ("%f", &r);
  si = (p * t * r) / 100;

  printf ("Simple int are= %f", si);
  return 0;
}