|
马上注册,结交更多好友,享用更多功能^_^
您需要 登录 才可以下载或查看,没有账号?立即注册
x
小甲鱼的 C++快速入门,第36课的例题,我原样照抄下来之后,发现 delete ptr 这个代码直接让游戏崩溃了,然我有把甲鱼大大的源代码打开,编译之后还是卡在那个地方,直接崩溃程序,我的系统是win7 64位,vc++6.0 和 vs2008 都出问题。希望有人能帮我解答下,在线等!!!!急!
代码如下:
#include <iostream>
#include <string>
class MyClass
{
public:
MyClass(int *p);
MyClass(const MyClass &rhs);
~MyClass();
MyClass &operator=(const MyClass &rhs);
void print();
private:
int *ptr;
};
MyClass::MyClass(int *p)
{
std::cout << "进入主构造器\n";
ptr = p;
std::cout << "离开主构造器\n";
}
MyClass::MyClass(const MyClass &rhs)
{
std::cout << "进入副本构造器\n";
*this = rhs;
std::cout << "离开副本构造器\n";
}
MyClass::~MyClass()
{
std::cout << "进入析构器\n";
delete ptr;
std::cout << "离开析构器\n";
}
MyClass &MyClass::operator=(const MyClass &rhs)
{
std::cout << "进入赋值语句重载\n";
if( this != &rhs )
{
delete ptr;
ptr = new int;
*ptr = *rhs.ptr;
}
else
{
std::cout << "赋值号两边为同个对象,不做处理!\n"; // obj1 = obj1;
}
std::cout << "离开赋值语句重载\n";
return *this;
}
void MyClass::print()
{
std::cout << *ptr << std::endl;
}
int main()
{
MyClass obj1(new int(1));
MyClass obj2(new int(2));
obj2 = obj1;
obj1.print();
obj2.print();
std::cout << "-------------------------------\n";
MyClass obj3(new int(3));
MyClass obj4 = obj3;
obj3.print();
obj4.print();
std::cout << "-------------------------------\n";
MyClass obj5(new int(5));
obj5 = obj5;
obj5.print();
return 0;
}
|
|