Facing logical error. Need help to sort things up.

Question

There is a code I made to calculate Simple and Compound interest. But whatever parameters I set for calculating compound interest, it always comes out to be zero. I went by the following approach:
Amount = Principal + Interest
Interest = Amount - Principal -------(1)

Amount = Principal( 1+ Rate of interest/100)^(No.of years) ----------(2)
{ as the interest has to be compounded annually }

So, interest comes out to be:
C.I= P(1 + r/100)^(t) - P
=>C.I= P[(1+ r/100)^(t) -1]

Where did I go wrong?

https://code.sololearn.com/cemoFnS5DV8i/?ref=app

Answer 1

Try using float instead of int

Answer 2

You probably entered to low values, I tried 10>>500>>2 and it worked.
If values are too low it won't work, beacuse you divide it by 100.

Answer 3

Olek Szczepura It's not about big or small values. For example, if the principal amount is 100, the rate of interest is 10 and the time period is 2 years then the interest should be 21 but it's giving 30 as output

Answer 4

Olek Szczepura Thanks for the tip. Using float solved my problem 😃