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...
Refhttp://www.geeksforgeeks.org/some-interesting-facts-about-static-member-functions-in-c/ 1)static member functions do not havethis pointer. 2)A static member function cannot be virtual (SeethisG-Fact) 3)Member function declarations with the same name and the name parameter-type-list cannot...
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‘...
static member function static void Test::fun() cannot have const method qualifier 参考 C++ keywords: static - cppreference.com C++ 中的 static 关键字 | Busyboxs (yangshun.win) C/C++ 中的static关键字 - 知乎 (zhihu.com) Static Keyword in C++ - GeeksforGeeks c++ - Static functions outside...
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。
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。
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。
In this case, we can’t access Something::s_value 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_value, we’d then need to instantiate an object of the ...
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 ...
编译报错:MicRecorder.cpp: In member function 'int micrecord::MicRecorderImpl::audioThread(void*)': MicRecorder.cpp:297:79: error: invalid use of non-static member function。 1 2 如果要创建线程函数audioThread为MicRecorderImpl类成员函数,就需要使用静态函数。