Question

我的代码编译如此，但我无法弄清楚为什么我一直收到这个错误，告诉我“Debug Assertion Failed”。这是为什么？

#include <iostream>
using namespace std;
struct Bag
{
int k;
};


int main () 
{ 
   int *p1; 
   int *p2;
   char p3;

   //k = 100; // Assigns variable of type bag to 100

   p1 = new int; // Variables created using the new operator are called dynamic variables
   p2 = new int;  


   *p1 = 30;
   *p2 = 50;
    p3  = 'K';

   *p1 = *p1 + *p2; 
    p1 = p2;

   cout << "The sum of the two pointers is = " << *p1 << endl; 

   delete p1;
   delete p2;                // Delete the dynamic variable p1 and return the memory occupied by p1 to the freestore to be reused. 

   system ("Pause");
   return 0; 
}

Answer 1

我猜你在那一行得到了Debug Assertion失败：

delete p2;

这里的问题是您设置“p1 = p2”，因此两个指针都指向包含整数“50”的内存位置。之后删除指针p1，这意味着UN分配包含整数“50”的内存位置。

此时p2未定义，尝试删除它将导致调试断言失败错误。

调试断言失败（动态类型变量）

1 个答案: