如何将引用变量增加1

Question

我是c ++的新手,我正在尝试从值50开始增加汽车,但如果youdamage比greamage更好,那么只增加一个.我希望汽车在下一次循环时保持其价值.我希望这是有道理的.

int Power (int &car);

int main(){
    int car = 50;
    // ...
    // ...
    // ...

    int carDamage = 0;
    int yourDamage = 0;
    // pick a random number between 1 to 50
    yourDamage = 0 + rand() % (50 - 0 + 1);
    carDamage = 0 + rand() % (50 - 0 + 1);
    cout << "You hit the car and cause damage of: " << carDamage << endl;
    cout << "The car hits you and causes damage of: " << yourDamage << endl;
    cout << endl;

    if(carDamage < yourDamage)
    {
        cout << "You win" << endl;
        cout << "You gain strength." << endl;
        cout << endl;
        int car = car + 1;
    }
    else
    {

Answer 1

你正在声明一个新变量遮蔽原始变量.

更改

int car = car + 1;

至

car = car + 1;

Answer 2

您需要重新分配给同一个变量.您正在声明一个新变量.

改变这个:

int car = car + 1;

对此:

++car;