C++ examples for Function:Function Creation
Calculate compound interest using function
#include <iostream> #include <cmath> using namespace std ; double compoundInterest ( double P, double i, int n) { double interest = P * pow (1 + 0.01*i, n) - P; return interest ; } int main () { // ww w. j ava2 s . com int principal ; double interestRate ; int numberOfYears ; cout << " How much are you investing ?\n"; cin >> principal ; cout << " What 's the annual interest rate (%)?\ n"; cin >> interestRate ; cout << " How long for ( years )?\ n"; cin >> numberOfYears ; double interest = compoundInterest ( principal , interestRate , numberOfYears ); cout << " You will earn "; cout << interest ; cout << "\n"; return 0; }