即使if为真，为什么if语句始终是else部分？

如何解决即使if为真，为什么if语句始终是else部分？

最后的if语句有问题。 **如果用户输入的数字的小数之和等于数字本身，请说“ ...”。否则，说“ .....” **

问题是它总是将if部分跳到else。

这是大学的一项任务，没有功课就什么也没有，只是培训。如果您有更好的建议，我也将不胜感激。

谢谢！

{
    int n;  

    cout << "Write a number different from 0 -> ";
    cin >> n;
    
    while (n == 0) 
    {
        cout << "Choose another number -> ";
        cin >> n;
    }

    cout << "Good number " << n << " is!" << "\n";
    cout << "lets separate each digit:" << "\n" << " -----------------------------------" << endl;
    Sleep(1000);
    
    vector<int> vecN;

    while (n != 0)
    {
        int digit = n % 10;
        n /= 10;
        cout << n << endl;
        cout << "Digit: " << digit << endl;
        vecN.push_back(digit);
        Sleep(750);
    }
    cout << "There you go!" << endl;
    Sleep(1000);
    cout << "Next stage,let's find the cubes for each one of the digits!" << endl;
    Sleep(2500);
    
    vector<int> sums;

    for (auto i = vecN.begin(); i != vecN.end(); i++)
    {
        Sleep(500);
        int Cubes = pow(*i,3);
        
        cout << Cubes << endl;
        sums.push_back(Cubes);
    }

    Sleep(1300);
    cout << "Now let's sum the cubs and see if the number is an Armstrong Number" << endl;
    Sleep(3000);

    int armSum = accumulate(sums.begin(),sums.end(),0);

    if ( armSum == n )
    {
        cout << "Sum: " << armSum << endl;
        Sleep(500);
        cout << "That's an Armstrong Number!" << "\n"
            "The sum of the cubs of each digit in the number is equal to that same number!" << endl;
    }
    else
    {
        cout << "Sum: " << armSum << endl;
        Sleep(500);
        cout << "That's not an Armstrong Number!" << endl;
    }
        
    return 0;
} ```

解决方法

输入if部分后，将不再输入else部分。请注意，您的if/else没有被循环包围。因此，当控制权一次通过时，例如输入n==0后，它就已经过去了，不会再次进入if和else部分。

尝试类似

while (n==0) {
    cout << "Choose another number -> ";
    cin >> n;
}

// continue here; n is != 0