Write a C Program to Calculate simple interest.

#include<stdio.h> 

void main()

{
   int amount,rate,time,si;

   printf("\nEnter Principal Amount: ");
   scanf("%d", &amount);

   printf("\nEnter Rate of Interest: ");
   scanf("%d", &rate);

   printf("\nEnter Period of Time: ");
   scanf("%d", &time);

   si = (amount * rate * time) / 100;
   printf("\nSimple Interest : %d", si);
   getch();
}