Calculate simple intrest c program

#include <stdio.h>

int main()
{
    float principal_amt, rate;
    double simple_interest;
    int time;

    printf("Enter the values of principal_amt, rate and time \n");
    scanf("%f %f %d", &principal_amt, &rate, &time);

    simple_interest = (principal_amt * rate * time) / 100.0;

    printf("Amount = Rs. %5.2f\n", principal_amt);
    printf("Rate = Rs. %5.2f\n", rate);
    printf("Time = %d years\n", time);
    printf("Simple interest = %5.2f\n", simple_interest);

    return 0;
}

Output : 

Enter the values of principal_amt, rate and time
15 10 3
Amount = Rs. 15.00
Rate = Rs. 10.00
Time = 3 years
Simple interest =  4.50