#include
#include
using namespace std;
double balance;
/**
Accumulates interest in the global variable balance
@param p the interest rate in percent
@param n the number of periods the investment is held
*/
void future_value(double p, int n)
{
balance = balance * pow(1 + p / 100, n);
}
int main()
{
balance = 10000;
future_value(5, 10);
cout << "After ten years, the balance is "
<< balance << "\n";
return 0;
}