According to the rule of static in C++, only static member function can access static data members. Non-static data member can never be accessed through static member functions. Note: Inline function can never be static.C++ - Static Data Member C++ - Static Data Member Example ...
In this case, we can't access Something::s_nValue directly from main(), because it is private. Normally we access private members through public member functions. While we could create a normal public member function to access s_nValue, we'd then need to instantiate an object of the cla...
This program is implemented to count the total number of created objects with the help of static data member and static member function.A static data member needs to be declared first that we declared in private section: Example: static int count; To count the object, data member count must...
// C++ program to demonstrate static // member function in a class #include<iostream> using namespace std; class GfG { public: // static member function static void printMsg() { cout<<"Welcome to GfG!"; } }; // main function int main() { // invoking a static member function GfG:...
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‘...
对于static member functions而言,它们与static member variables类似,它们是该类所有对象公有的。因为对象需要创建才存在,而non- static member是和object绑定的。所以static member functions禁止访问non-static member (neither member variables nor member functions),当然也无法在函数内部使用this关键字。
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。
In the following example, the nonstatic member function printall() calls the static member function f() using the this pointer:#include <iostream> using namespace std; class C { static void f() { cout << "Here is i: " << i << endl; } static int i; int j; public: C(int ...
static (Global) Function:有文件作用域,只在本文件中使用 Global Function:无文件作用域 static Member (in Function) variable:函数调用完成后,变量保存状态,再次调用函数,不会重新分配空间 Member(in Funcition) variable:函数内的生命周期 static Member(in Class) variable:属于类范围, ...
目录 报错代码 报错 原因 解决方案 报错代码 报错 reference to non-static member function must be called 或 no matching function for call to xxx 原因 class中函数参数隐藏了this指针,实际上cmp的参数有3个而非2个,不符合sort函数的期望。 解决方案 1.将比较函数cmp声明为静态的: 2...leet...