收银员的c ++程序模拟;

Question

1.我正在尝试模拟收银员登记册，这是一个互联网上的代码，应该有效，但QT一直告诉我，美元，宿舍，角钱，镍币等等。便士是未申报的身份证明者。没有正确地在底部声明它们？

#include <iostream>

using namespace std;


void printChange(int&, int&, int&, int&, int&);


void findCoins (int&, int&, int&, int&, int&);


int main ()
{

double price;
double payment;
char answer ='y';
while(answer == 'y')
{
  cout<<"Enter price of an item: "<<endl;
  cin>>price;
  cout<<"Enter payment from customer: "<<endl;
  cin>>payment;
  double change = payment - price;
  dollars = change;
  change = change * 100;

  int coins = change - dollars * 100;
  findCoins(coins, quarters, dimes, nickels, pennies);

  printChange(dollars, quarters, dimes, nickels, pennies);
  cout <<"Do you have another transaction?";
  cin >>answer;
}
  cout<<"Thanks for shopping at Albertsons!"<<endl;
  return 0;

}

  void printChange(int& dol, int& q, int& d, int& n, int& p)
{
  cout<<"dollars "<<dol<<endl;
  cout<<"quarters: "<<q<<endl;
  cout<<"dimes: " <<d<<endl;
  cout<<"nickels: " <<n<<endl;
  cout<<"pennies: " <<p<<endl;
}

 void findCoins(int& coins, int& quarters, int& dimes, 
    int& nickels,  int& pennies)

{
    quarters = coins/25;
    dimes = coins % 25 / 10;
    nickels = coins % 25 % 10 / 5;
    pennies = coins % 25 & 10 % 5;
}

Answer 1

要用c ++声明变量，你需要

TYPE name;

或

TYPE name = expession;

在首次使用之前

。

它的价格是double price;，但不是美元和其他价格。