C++中复制构造函数和重载赋值操作符总结(2)

#include <iostream>
using namespace std;
 
const int MAXSIZE = 260;
 
class CTest
{
public:
     CTest(wchar_t *pInitValue)
     {
          // Here, I malloc the memory
          pValue = new wchar_t[MAXSIZE];
          memset(pValue, 0, sizeof(wchar_t) * MAXSIZE);
          wcscpy_s(pValue, MAXSIZE, pInitValue);
     }
 
     ~CTest()
     {
          if (pValue)
          {
               delete[] pValue; //finalseabiscuit指出，谢谢。2014.7.24
               pValue = NULL;
          }
     }
 
     CTest(const CTest &test)
     {
          // Malloc the new memory for the pValue
          pValue = new wchar_t[MAXSIZE];
          memset(pValue, 0, sizeof(wchar_t) * MAXSIZE);
          wcscpy_s(pValue, MAXSIZE, test.pValue);
     }
 
     CTest& operator=(const CTest &test)
     {
          // This is very important, please remember
          if (this == &test)
          {
               return *this;
          }
 
          // Please delete the memory, this maybe cause the memory leak
          if (pValue)
          {
               delete[] pValue; // 方恒刚指出的问题。非常感谢 2014.3.15
          }
 
          // Malloc the new memory for the pValue
          pValue = new wchar_t[MAXSIZE];
          memset(pValue, 0, sizeof(wchar_t) * MAXSIZE);
          wcscpy_s(pValue, MAXSIZE, test.pValue);
          return *this;
     }
 
     void Print()
     {
          wcout<<pValue<<endl;
     }
 
private:
     wchar_t *pValue; // The pointer points the memory
};
 
int main()
{
     CTest obj(L"obj");
     obj.Print();
 
     CTest obj2(L"obj2");
     obj2.Print();
     obj2 = obj;
     obj2.Print();
 
     obj2 = obj2;
     obj2.Print();
 
     return 0;
}