c++ - 为什么进程返回-1？

Question

运行以下代码:

int main()
{
    double hour[3];
    double charge[3];

    double sum_hour = 0;
    double sum_charge = 0;

    for (int i = 1; i <= 3; i++)
    {
        cout<<"Enter the hours for car No. "<<i<<": ";
        cin>>hour [i];

        if (hour [i] <= 3.0)
            {charge [i] = 2.00;}
        if (hour [i] > 3.0 && hour [i] < 24)
            {charge [i] = 2.00 + (ceil(charge [i] -3))*0.5;}
        if (hour [i] == 24.0)
            {charge [i] = 10.00;}

        sum_hour  = sum_hour + hour [i];
        sum_charge = sum_charge + charge [i];
    }

    cout<<"Car"<<setw(10)<<"Hours"<<setw(10)<<"Charge"<<endl;


}

在执行了for 循环 并且代码没有运行cout 循环后:

Process returned -1 (0xFFFFFFFF) execution time...

Answer 1

在循环中for (int i = 1; i <= 3; i++)数组索引应该从0开始.将循环更改为:

for (int i = 0; i < 3; i++)

当 i is 3 时，您的数组索引超出范围这里cin>>hour [i]; , 它的未定义行为。

这里要加上，不要做浮点比较:

if (hour [i] <= 3.0)// 

尽管这与您的原始问题无关，但请阅读 Why doesn't my floating-point comparison work?