x<<endl; c.function(); return 0; } 在普通·成员函数中可以调用静态成员函数,但是在静态成员函数中不可以·调用普通成员函数, 会出现下面的错误·: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 [bsk@localhost classobject]$ g++ staticnumbers.cpp staticnumbers.cpp: In static member function‘...
#include<stdio.h>classPoint{public:voidinit(){}staticvoidoutput(){printf("%d\n",m_x);}private:int m_x;};voidmain(){Point pt;pt.output();} 编译出错:error C2597: illegal reference to data member ‘Point::m_x’ in a static member function 因为静态成员函数属于整个类,在类实例化对象之...
Like static data members, you may access a static member functionf()of a classAwithout using an object of classA. A static member function does not have athispointer. The following example demonstrates this: #include <iostream> using namespace std; struct X { private: int i; static int ...
error C2597:illegal reference to data member'Point::m_x'inastaticmemberfunction 因为静态成员函数属于整个类,在类实例化对象之前就已经分配空间了,而类的非静态成员必须在类实例化对象后才有内存空间,所以这个调用就出错了,就好比没有声明一个变量却提前使用它一样。 结论3:静态成员函数中不能引用非静态成员。
Astatic data member exists independently of any object of its class,each static data member is an object associated with the class, notwith the objects of that class. 也就是说,静态成员是独立于对象的,是与其所在类相关联的。 普通的成员变量是对象的一部分,而static类型的变量独立于任何的对象存在,它...
Const member functions3 当一个类的对象被限定为const时,从类的外部访问其member data时仅能进行read-only,但constructor仍然被自动调用来初始化和修改对象的data。 // constructor on const object #include <iostream> using namespace std; class MyClass { ...
illegal reference to data member 'Point::y' in a static member function 在一个静态成员函数里错误的引用了数据成员, 还是那个问题,静态成员(函数),不属于任何一个具体的对象,那么在类的具体对象声明之前就已经有了内存区, 而现在非静态数据成员还没有分配内存空间,那么这里调用就错误了,就好像没有声明一个变...
If initializing your static member variable requires executing code (e.g. a loop), there are many different, somewhat obtuse ways of doing this. One way that works with all variables, static or not, is to use a function to create an object, fill it with data, and return it to the ...
A static member function cannot access the non static members of the class or base class class X{ public: int b; static int a; enum mode{a1,a2,a3}; static int inc() { return b;//this will give an error } X(){}; }; Static data members of class have extern linkage, they can...
error C2597:illegal reference to data member'Point::m_x'inastaticmemberfunction 因为静态成员函数属于整个类,在类实例化对象之前就已经分配空间了,而类的非静态成员必须在类实例化对象后才有内存空间,所以这个调用就出错了,就好比没有声明一个变量却提前使用它一样。