我在c ++中有一个循环错误

Question

当用户添加了他想重复循环的次数，但他一直重复循环没有结束时产生错误

这是代码

#include <iostream>
using namespace std;

int main()
{
    char resp, copcion, varied, tprod;
    int cfab, ncod, num;

    cout << "How many products do you want to register ?, enter the respective number";
    cin >> num;

    while (num > 0)
    {
        cout << "Enter the product type If you are a Child (n) or Adult (a)";
        cin >> tprod;

        if ((tprod != 'n') && (tprod != 'N') && (tprod != 'a') && (tprod != 'A'))
        {
            cout << "ERROR: The product type is only Children (n) or Adults (a)" << endl;
        }

        cout << "Enter your Variety for Salted (s) and Sweets (d)";
        cin >> varied;

        if ((varied != 'd') && (varied != 'D') && (varied != 's') && (varied != 'S'))
        {
            cout << "ERROR: The variety of products are only Sweets (d) or Salted (s)" << endl;
        }
        //Code range
        //Salted 1 to 10
        //Sweets 11 to 20

        cout << "Enter the product code you wish to assign";
        cin >> ncod;

        if (ncod > 20)
        {
            cout << "ERROR: There is a range of numbers, you exceeded that amount" << endl;
        }

        cout << "Enter the respective amount";
        cin >> cfab;

        if (cfab = 0)
        {
            cout << "ERROR: Amount entered is not valid";
        }
    }
    return 0;
}

先谢谢解惑

Answer 1

代码将一个数字读入 num 变量并执行 while(num>0) - 但它永远不会改变 num 所以它总是大于 0 并永远循环。

也许将 while(num>0) { 更改为 while(num-- > 0) { 以每次递减 num 并且循环将运行 num 次而不是无限次。

我在c ++中有一个循环错误

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