c++ - 为什么这些简单的函数会给出天文数字大或小的数字？

Question

所以我的教授要求我们制作一个程序，根据输入的工资率和工作时间计算预算。百分比是教授给出的。另外，我是 C++ 的新手，所以请原谅我。

#include <iostream>

using namespace std;

int main()

{
  int hours;
  double Pay;

  const double Net      = hours * Pay;
  const double Tax      = Net * .14;
  const double afterTax = Net - Tax;
  const double Clothes  = .1 * afterTax;
  const double Supplies = .01 * afterTax;
  const double Bonds    = .25 * afterTax;
  const double Parents  = Bonds / 2;

  cout << "Please enter hours worked \n";
  cin >> hours;
  cout << "Please enter hourly rate \n";
  cin >> Pay;

  cout << "Total Number of hours worked: " << hours << endl;
  cout << "Total income before taxes: " << Net << endl;
  cout << "Net Income: " << afterTax << endl;
  cout << "Money Spent on clothes and accessories: " << Clothes << endl;
  cout << "Money spent on school supplies: " << Supplies << endl;
  cout << "Money spent on savings bonds: " << Bonds << endl;
  cout << "Money spent by parents for savings bonds: " << Parents << endl;
  cout << "Remaining: " << afterTax - Clothes - Supplies - Bonds << endl;

  return 0;
}

Answer 1

hours 和其他几个变量未初始化，但您使用它们的值来初始化其他变量。您需要重新安排计算，以便在用户输入必要的项目后执行这些计算。