Find the interest and amount resided in the bank

Ratik a young millionaire deposits $10000 into a bank account paying 7% simple interest per year. He left the money in for 5 years. He likes to predict the interest and the amount earned by him at the end of 5 years
Can you help him to find the interest and amount resided in his bank acoount after 5 years?
Functional Description:

interest = (p * i * t) / 100 and

amount = p + interest.

where p is total principal, i is rate of interest per year, and t is total time in years.

Input: 
Input has three values representing Principle,Interest per year and Time.

Output:
First Line: Print the interest earned for the principle amount.

Second Line: Print the Total amount earned including interest.

#include <stdio.h>
int main()
{
float p,i,interest,amount;
int t;
scanf("%f %f %d",&p,&i,&t);
interest=p*i*t/100;
amount=p+interest;
printf("Interest after %d Years = $%.2f",t,interest);
printf("\nTotal Amount after %d Years = $%.2f",t,amount);
    return 0;
}

INPUT_1:
10000 7.8 5

OUTPUT:
Interest after 5 Years = $3900.00
Total Amount after 5 Years = $13900.00

INPUT_2:
13000 9 7

OUTPUT:
Interest after 7 Years = $8190.00
Total Amount after 7 Years = $21190.00

INPUT_3:
12500 9.3 7

OUTPUT:
Interest after 7 Years = $8137.50
Total Amount after 7 Years = $20637.50

Morae Q!