Usage static storage duration with internal linkage specifier declarations of class members not bound to specific instances

Statements are fragments of the C++ program that are executed in sequence. The body of any function is a sequence of statements. For example: int main() { int n = 1; // declaration statement n = n+1; // expression statement std::cout << "n = " << n << '\n'; // expression statement return 0; // return statement } There are seven types of statements: 1) expression statement 2) compound statement 3) selection statement 4) iteration statement 5) jump statemen

Specifies that a type is standard layout type. Standard layout types are useful for communicating with code written in other programming languages. Note, that the standard doesn't define a named requirement or concept with this name. This is a type category defined by the core language. It is included here as concept only for consistency. Requirements All non-static data members have the same access control Has no virtual functions or virtual base classes All non-static data members and

This header is part of the containers library. Includes <initializer_list>(C++11) Classes stack adapts a container to provide stack (LIFO data structure) (class template) std::uses_allocator<std::stack> (C++11) specializes the std::uses_allocator type trait (function template) Functions operator==operator!=operator<operator<=operator>operator>= lexicographically compares the values in the stack (function template) std::swap(std::stack)

This header is part of the Input/Output library. Classes basic_stringbuf implements raw string device (class template) basic_istringstream implements high-level string stream input operations (class template) basic_ostringstream implements high-level string stream output operations (class template) basic_stringstream implements high-level string stream input/output operations (class template) Typedefs stringbuf basic_stringbuf<char> wstringbuf basic_str

Includes other source file into current source file at the line immediately after the directive . Syntax #include <filename> (1) #include "filename" (2) __has_include ( " filename " )__has_include ( < filename > ) (3) (since C++17) Any preprocessing tokens (macro constants or expressions) are permitted as arguments to #include and __has_include (since C++17) as long as they expand to a sequence of characters surrounded by < > or " ". Explanation 1,2

Queries the number of elements in a parameter pack. Syntax sizeof...( parameter_pack ) (since C++11) Returns a constant of type std::size_t. Explanation Returns the number of elements in a parameter pack. Keywords sizeof. Example #include <iostream> #include <array> template<typename... Ts> constexpr auto make_array(Ts&&... ts) -> std::array<std::common_type_t<Ts...>,sizeof...(ts)> { return { std::forward<Ts>(ts)...

Queries size of the object or type. Used when actual size of the object must be known. Syntax sizeof( type ) (1) sizeof expression (2) Both versions return a constant of type std::size_t. Explanation 1) returns size in bytes of the object representation of type. 2) returns size in bytes of the object representation of the type, that would be returned by expression, if evaluated. Notes Depending on the computer architecture, a byte may consist of 8 or more bits, the exact

Usage sizeof operator sizeof... operator (since C++11)

Defined in header <csignal> #define SIG_ERR /* implementation defined */ A value of type void (*)(int). When returned by std::signal, indicates that an error has occurred. See also signal sets a signal handler for particular signal (function) C documentation for SIG_ERR