Question

我这里有这段代码

string shapename;
bool warpspace;
const int size = 100;
 ShapeTwoD shape2D[size]; // ShapeTwoD is a parent class
int number =0;
static int count = 0;

while(choice !=999) 
{ 

    switch(choice)
    {
        case 1: 
        {
            cout<<"[Input sensor data]"<<endl;
            cout<<"Please enter name of Shape:";
            cin>>shapename;
            shape2D[size].setName(shapename); //segmentation fault
            cout<<"Please enter special type:";
            cin>>warpspace;
            shape2D[size].setContainsWarpSpace(warpspace);
            cin.clear();
            cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
            if(shapename == "Square" || shapename == "square")
                { square.setSquareCord(); count++; }
            if(shapename == "Rectangle" || shapename == "rectangle")
                { rect.setRectangleCord(); count++; }
            mainmenu();
            cin>>number;
            option(number);
        }break;//there are still multiple cases 
    }
}

当我尝试编译并运行它时，它在我输入Shape please enter name of shape :之后立即给出了分段错误我在这里做错了什么？

Answer 1

您正在访问数组边界：

shape2D[size].
        ^^^^

有效数组索引从0到size-1

c ++分段故障切换语句cin

1 个答案: