Calculate Simple Interest using C

/*    Calculate Simple interest    */
#include<stdio.h>
int main()
{
 float p;
 float ir,t;
 float in;

  printf("Type your principle amount : ");
  scanf("%f",&p);
  printf("\n Type your rate of intrest : ");
  scanf("%f",&ir);
  printf("\n Type time (in year) : ");
  scanf("%f",&t);
  in=p*ir*t/100;
  printf("\n You will get intrest : %.2f",in);
 return 0;
}