Write a program to take input from the user

1. Principle
2. Time
3. Rate

And find out the simple interest where simple interest = (p*t*r)/100.  

C Code

#include<stdio.h>
#include<conio.h>
void main(){

  float p, t, r, si;

  printf("enter principle:");
  scanf("%f",&p);

  printf("enter time:");
  scanf("%f",&t);

  printf("enter rate:");
  scanf("%f",&r);

  si = (p*t*r)/100;

  printf("Simple Interest = %f", si);

        getch();
}

Output