The last function that I need to write for my Uni assignment is to calculate compound interest. I have done this successfully for balances in credit but I am unsure what to so about balances in debit.
This is a code excerpt
This works, do I need to make it pow(-1-rate, months) for negative balances?
cout <<"\n\tHow many months to you wish to calculate the interest over? ";
cin >> months;
double principle = 1000;
amount = principal * pow( 1.0 + rate, months );
cout <<"\n\tAfter " << months <<" months with a principle of " << principle
<<"\n\tYour balance will be:"<< setiosflags( ios::fixed | ios::showpoint )<<"\t"
<< setprecision( 2 ) << amount <<"\n\n" << endl;
Any help would be appreciated.