Question

运行这段代码会导致堆损坏

#include <iostream>
using namespace std;

class X
{
public:
    char* charArr;
    int *intArr1;
    int *intArr2;
    int *intArr3;
    X()
    {
        charArr = new char[] { 5, 5, 5, 5 };
        intArr1 = new int[] { -10, -10, -10 };
        intArr2 = new int[] { -20, -20, -20};
        intArr3 = new int[] { -30, -30, -30};
    }
    ~X()
    {
    delete[] charArr;
    delete[] intArr1;
    delete[] intArr2;
    delete[] intArr3;
    }
};

int main()
{
    X x;
    return 0;
}

我做错了什么？我使用visual studio，这是错误消息： exception

Answer 1

我也使用Visual Studio。当我尝试开始调试时。写作时出现了一些错误：

charArr = new char[] { 5, 5, 5, 5 };
intArr1 = new int[] { -10, -10, -10 };
intArr2 = new int[] { -20, -20, -20};
intArr3 = new int[] { -30, -30, -30};

我认为你应该写如下：

#include <iostream>
using namespace std;

class X
{
public:
    char* charArr;
    //int *intArr1;
    //int *intArr2;
    //int *intArr3;
    X()
    {
        charArr = new char[4];
        for(int i = 0; i < 4; i++)
            charArr[i] = 5;


        //intArr1 = new int[] { -10, -10, -10 };
        //intArr2 = new int[] { -20, -20, -20};
        //intArr3 = new int[] { -30, -30, -30};
    }
    ~X()
    {
    delete[] charArr;
   // delete[] intArr1;
   // delete[] intArr2;
   // delete[] intArr3;
    }
};

int main()
{
    X x;

    return 0;
}

然后它运作良好。

堆已损坏异常C ++

1 个答案: