SimpleInterest Program
Description
A simple interest on a loan is calculated by the following formula.
interest = principal x annual interest rate x time period in days / 365
This program prompts the user to enter the principal, annual interest rate, time period in days for several loans, and calculates the simple interest charge for each loan.
The number of loans is unknown. So a sentinel-controlled loop is used to control the loop execution.
Associated Concepts:
Sentinel-controlled while loop
Algorithm:
Input the principal amount before entering the loop body
Use a sentinel controlled while loop for each iteration (use -1 as the sentinel value)
(If the principal amount is not equal to the sentinel value, the loop continues.)
(If the principal amount is equal to the sentinel value, the loop ends.)
In the loop body, input the interest rate and the time period in days
If the inputs are invalid
Print an error message
Otherwise
Calculate and print the interest
Input another principal amount at the end of the while loop body
Use a sentinel controlled while loop for each iteration (use -1 as the sentinel value)
(If the principal amount is not equal to the sentinel value, the loop continues.)
(If the principal amount is equal to the sentinel value, the loop ends.)
In the loop body, input the interest rate and the time period in days
If the inputs are invalid
Print an error message
Otherwise
Calculate and print the interest
Input another principal amount at the end of the while loop body
Source Code
Sample Run
