Question

家伙！这里是我的银行分配代码。当我选择案例1来检查余额时，它运行良好。但是，当我选择案例2进行存款时，程序在输入存款金额后立即崩溃。我查看了代码，但我不确定问题出在哪里。但是，该程序似乎在cpp.sh网站上执行时运行正常，并且只在Visual Studio上崩溃。是因为我的代码还是我的编译器？

#include <iostream>
#include <string>
using namespace std;

class account {

private:
    double AccountActivity[200];
    double balance;
    int numTransactions;

public:

    //declaration
};

void account::test() {

    account a;
    int choice;
    bool menu = true;
    double amount = 0;

    while (menu = true) {
        choice = a.getUserChoice();
        switch (choice) {
        case 1:
            a.print();
            break;
        case 2:
            cout << "\n\nPlease enter the amount of deposit: " << endl;
            cin >> amount;
            a.deposit(amount);
            break;
        case 3:
            cout << "\n\nPlease enter the amount of withdrawal: " << endl;
            cin >> amount;
            a.withdraw(amount);
            break;
        case 4:
            cout << "The largest deposit is: " << a.getLargest() << endl;
        default:
            cout << "Please choose from 1 to 4" << endl;
            break;
        }
    }

}

int account::getUserChoice() {
    //do something
}
double account::getLargest()
{
    //do something
}

void account::print() {
    cout << "Your balance is: $" << balance;
    cout << "\n\n";
}

account::account() {
    balance = 0;
}

void account::deposit(double amount) {
    if (numTransactions < 200)
    {
        AccountActivity[numTransactions] = amount;
        numTransactions++;
        balance += amount;
    }
}

void account::withdraw(double amount) {
    if (balance < amount)
        cout << "Insufficient balance" << endl;
    else
    {
        if (amount >= 0 && numTransactions < 200)
        {
            AccountActivity[numTransactions] = -amount;
            numTransactions++;
            balance -= amount;
        }
    }
}

int main() {
  //do something
}

Answer 1

account::account()未初始化。使用未初始化的值索引到数组是未定义的行为。

在您的帐户构建器numTransactions中将while (menu = true) {设置为0

哦是的：while(menu)尝试menu - 但是你不会在循环中改变while(1) {，所以你也可以--parameter-values

该程序在Visual Studio上执行时崩溃，但在cpp.sh网站

1 个答案: