This header is part of the containers library. Includes <initializer_list>(C++11) Classes vector dynamic contiguous array (class template) vector<bool> space-efficient dynamic bitset (class template specialization) std::hash<std::vector<bool>> (C++11) hash support for std::vector<bool> (class template specialization) Functions operator==operator!=operator<operator<=operator>operator>= lexicographically compares the va

This header is part of the Input/Output library. Classes basic_filebuf implements raw file device (class template) basic_ifstream implements high-level file stream input operations (class template) basic_ofstream implements high-level file stream output operations (class template) basic_fstream implements high-level file stream input/output (class template) Typedefs filebuf basic_filebuf<char> wfilebuf basic_filebuf<wchar_t> ifstream basic_ifs

A class is a user-defined type. A class type is defined by class-specifier, which appears in decl-specifier-seq of the declaration syntax. The class specifier has the following syntax: class-key attr class-head-name base-clause { member-specification } (1) class-key - one of class, struct, union attr(C++11) - optional sequence of any number of attributes class-head-name - the name of the class that's being defined. Optionally prepended by nested-name-specifier (sequen

allocator_type get_allocator() const; Returns the allocator associated with the container. Parameters (none). Return value The associated allocator. Complexity Constant.

Defined in header <cmath> float log1p( float arg ); (1) (since C++11) double log1p( double arg ); (2) (since C++11) long double log1p( long double arg ); (3) (since C++11) double log1p( Integral arg ); (4) (since C++11) 1-3) Computes the natural (base e) logarithm of 1+arg. This function is more precise than the expression std::log(1+arg) if arg is close to zero. 4) A set of overloads or a function template accepting an argument of any in

Defined in header <cctype> int isdigit( int ch ); Checks if the given character is one of the 10 decimal digits: 0123456789. The behavior is undefined if the value of ch is not representable as unsigned char and is not equal to EOF. Parameters ch - character to classify Return value Non-zero value if the character is a numeric character, zero otherwise. Notes isdigit and isxdigit are the only standard narrow character classification functions that are not a

Defined in header <functional> template< class Res, class T > std::mem_fun_t<Res,T> mem_fun( Res (T::*f)() ); (1) (until C++17)(deprecated since C++11) template< class Res, class T > std::const_mem_fun_t<Res,T> mem_fun( Res (T::*f)() ); (1) (until C++17)(deprecated since C++11) template< class Res, class T, class Arg > std::mem_fun1_t<Res,T,Arg> mem_fun( Res (T::*f)(Arg) ); (2) (until C++17)(deprecated since C++11) template&

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

Defined in header <cwchar> const wchar_t* wcspbrk( const wchar_t* dest, const wchar_t* str ); wchar_t* wcspbrk( wchar_t* dest, const wchar_t* str ); Finds the first character in wide string pointed to by dest, that is also in wide string pointed to by str. Parameters dest - pointer to the null-terminated wide string to be analyzed src - pointer to the null-terminated wide string that contains the characters to search for Return value Po

iterator begin(); const_iterator begin() const; const_iterator cbegin() const; (since C++11) Returns an iterator to the first element of the container. If the container is empty, the returned iterator will be equal to end(). Parameters (none). Return value Iterator to the first element. Exceptions (none) (until C++11) noexcept specification: noexcept (since C++11) Complexity Constant. Example See also end cend returns an iterator to the end (publ