C Program to Find Simple Interest

/*
 * C program to find the simple interest, given principal,
 * rate of interest and time.
 */
 
#include<stdio.h>
int main()
{
 
    float principal, rate, time;
    printf("Enter the principal amount: ");
    scanf("%f",&principal);
    printf("Enter the rate of interest: ");
    scanf("%f",&rate);
    printf("Enter the time: ");
    scanf("%f",&time);
 
    float  simple_interest, amount;
    simple_interest = ((principal*rate*time)/100);
    amount = simple_interest + principal;
    printf("Simple Interest = %f \nAmount = %f",simple_interest, amount);
    return 0;
}

Output

Enter the principal amount: 7000
Enter the rate of interest: 50
Enter the time: 2
Simple Interest = 7000.000000 
Amount = 14000.000000