Write a C program Calculate Simple Interest

#include<stdio.h>

#include<conio.h>

void main()

{

    float principle_amount,rate,time,simple_interest;

    clrscr();

    printf("Enter your principal amount: ");

    scanf("%f",&principle_amount);

    printf("\nEnter your rate: ");

    scanf("%f",&rate);

    printf("\nEnter your time(year): ");

    scanf("%f",&time);

    simple_interest=(p*r*t)/100;

    printf("\nsimple interest=%2f",simple_interest);

    getch();

}