Mine

#include <iostream>
#include <cmath>
#include <iomanip>

using namespace std;
int main()
{

double change = 0;
int pennies = 0;

change = 6 - 5.99;
cout << change;

while (change >= 0.01)
{
      change = change - 0.01;
      pennies++;
}

cout << "\nPennies = " << fixed  << pennies << endl; 

 system("pause");
 return 0;

}