Problem
Money in a savings account earns simple interest: each year adds rate percent of the original amount principal. Compute the total balance after years years.
Implement simple_interest_total(principal, rate, years).
Input
principal: The starting amount. rate: The yearly interest rate in percent. years: The number of whole years.
Output
Return principal + principal × rate / 100 × years.
Constraints
0 ≤ principal ≤ 1,000,000; 0 ≤ rate ≤ 100; 0 ≤ years ≤ 100
Examples
Example 1
Input:
rate = 5.0
years = 2
principal = 1000.0
Expected output:
expected = 1100.0Input:
double rate = 5.0;
long long years = 2;
double principal = 1000.0;
Expected output:
double expected = 1100.0;Input:
double rate = 5.0;
long years = 2;
double principal = 1000.0;
Expected output:
double expected = 1100.0;Explanation
Each year earns 1000 × 5% = 50, so two years add 100: 1000 + 100 = 1100.
Example 2
Input:
rate = 0.0
years = 10
principal = 250.0
Expected output:
expected = 250.0Input:
double rate = 0.0;
long long years = 10;
double principal = 250.0;
Expected output:
double expected = 250.0;Input:
double rate = 0.0;
long years = 10;
double principal = 250.0;
Expected output:
double expected = 250.0;Explanation
With a 0% rate nothing is added, so the balance stays 250.
References
This challenge is adapted for CodeUtility. Follow the statement and constraints above.