C PROGRAM TO FIND SIMPLE INTEREST

#include<stdio.h> 

#include<conio.h>

void main()

{

int p,n;

float r,si; 

 printf("\nEnter Principal Amount : ");

 scanf("%d", &p); 

printf("\nEnter Rate of Interest : ");

scanf("%f", &r); 

 printf("\nEnter Period of Time   : ");

 scanf("%d", &n); 

 si = (amount * rate * time) / 100;

printf("\nSimple Interest : %f", si); 

 getch();

}