intx; /* start of Nested class declaration */ classNested{ inty; };// declaration Nested class ends here voidEnclosingFun(Nested *n){ cout<<n->y;// Compiler Error: y is private in Nested } };// declaration Enclosing class ends here intmain() { }...
// nested.cpp -- using a queue that has a nested class #include "queuetp.h" #include <iostream> #include <string> int main() { QueueTP<std::string> cs(5); std::string temp; while (!cs.isfull()) { std::cout << "Please enter your name. You will be served in the order of...
A class, struct or union that is declared within another class. For example the struct PairT in the following code is a nested class: template<class T> class MyTemplateClass { public: struct PairT { T first, second; }; }; Import path import cpp ...
intx,y;// globalsclassenclose{// enclosing classintx;// note: private membersstaticints;public:structinner{// nested classvoidf(inti){x=i;// Error: can't write to non-static enclose::x without instanceinta=sizeof x;// Error until C++11,// OK in C++11: operand of sizeof is uneva...
// member_functions_in_nested_classes.cpp class BufferedIO { public: enum IOError { None, Access, General }; class BufferedInput { public: int read(); // Declare but do not define member int good(); // functions read and good. private: IOError _inputerror; }; class BufferedOutput {...
// nested_class_template1.cpp // compile with: /EHsc #include <iostream> using namespace std; class X { template <class T> struct Y { T m_t; Y(T t): m_t(t) { } }; Y<int> yInt; Y<char> yChar; public: X(int i, char c) : yInt(i), yChar(c) { } ...
exception Class Thread Safety in the C++ Standard Library Phản hồi Trang này có hữu ích không? CóKhông Cung cấp phản hồi về sản phẩm| Nhận trợ giúp tại phần H&Đ của Microsoft...
// nested_class_template1.cpp // compile with: /EHsc #include <iostream> using namespace std; class X { template <class T> struct Y { T m_t; Y(T t): m_t(t) { } }; Y<int> yInt; Y<char> yChar; public: X(int i, char c) : yInt(i), yChar(c) { } ...
<cpp |error Defined in header<exception> classnested_exception; (since C++11) std::nested_exceptionis a polymorphic mixin class which can capture and store the current exception, making it possible to nest exceptions of arbitrary types within each other. ...
cpp // a.h class A; // 前向声明,A是一个incomplete type class B { public: void foo() { A::someMethod(); // 错误:incomplete type used in nested name specifier } }; 为了修正这个错误,我们需要确保A在使用其成员之前已经被完全定义。可以通过以下方式修正: cpp // a.h #ifndef A_H #de...