ostrstream(); (1) ostrstream(char* s, int n, std::ios_base::openmode mode = std::ios_base::out); (2) Constructs new output strstream and its underlying std::strstreambuf. 1) Default-constructs the underlying std::strstreambuf, which creates a dynamically growing buffer, and initializes the base class with the address of the strstreambuf member. 2) Initialized the base class with the address of the underlying std::strstreambuf member, which is initialized in one of the two possib

template< class Rep, class Period > std::cv_status wait_for( std::unique_lock<std::mutex>& lock, const std::chrono::duration<Rep, Period>& rel_time); (1) (since C++11) template< class Rep, class Period, class Predicate > bool wait_for( std::unique_lock<std::mutex>& lock, const std::chrono::duration<Rep, Period>& rel_time, Predicate pred); (2) (since C++11) 1) Atomically rele

Defined in header <type_traits> template< class T > struct is_move_constructible; (1) (since C++11) template< class T > struct is_trivially_move_constructible; (2) (since C++11) template< class T > struct is_nothrow_move_constructible; (3) (since C++11) 1) If T is not a referenceable type (i.e., possibly cv-qualified void or a function type with a cv-qualifier-seq or a ref-qualifier), provides a member constant value equal to false. Otherwise,

Defined in header <cinttypes> std::intmax_t strtoimax( const char* nptr, char** endptr, int base ); (since C++11) std::uintmax_t strtoumax( const char* nptr, char** endptr, int base ); (since C++11) Interprets an integer value in a byte string pointed to by nptr. Discards any whitespace characters (as identified by calling isspace()) until the first non-whitespace character is found, then takes as many characters as possible to form a valid base-n (where n=base) integ

size_type find_first_not_of( const basic_string& str, size_type pos = 0 ) const; (1) size_type find_first_not_of( const CharT* s, size_type pos, size_type count ) const; (2) size_type find_first_not_of( const CharT* s, size_type pos = 0 ) const; (3) size_type find_first_not_of( CharT ch, size_type pos = 0 ) const; (4) Finds the first character equal to none of the characters in the given character sequence. The search considers only the interval [pos, size()). If t

static T denorm_min(); (until C++11) static constexpr T denorm_min(); (since C++11) Returns the minimum positive subnormal value of the type T, if std::numeric_limits<T>::has_denorm != std::denorm_absent, otherwise returns std::numeric_limits<T>::min(). Only meaningful for floating-point types. Return value T std::numeric_limits<T>::denorm_min() /* non-specialized */ T(); bool false char ​0​ signed char ​0​ unsigned char ​0​ wchar_t

Defined in header <cstdio> ​int scanf( const char* format, ... );​ (1) int fscanf( std::FILE* stream, const char* format, ... ); (2) int sscanf( const char* buffer, const char* format, ... ); (3) Reads data from the a variety of sources, interprets it according to format and stores the results into given locations. 1) Reads the data from stdin 2) Reads the data from file stream stream 3) Reads the data from null-terminated character string buffer Paramet

Defined in header <valarray> template< class T > valarray<T> atan( const valarray<T>& va ); For each element in va computes arc tangent of the value of the element. Parameters va - value array to apply the operation to Return value Value array containing arc tangents of the values in va. Notes Unqualified function (atan) is used to perform the computation. If such function is not available, std::atan is used due to argument dependent l

Defined in header <exception> template< class T > [[noreturn]] void throw_with_nested( T&& t ); (since C++11) If std::remove_reference_t<T> is a non-final non-union class type that is neither std::nested_exception nor derived from std::nested_exception, throws an exception of an unspecified type that is publicly derived from both std::nested_exception and from std::remove_reference_t<T>, and constructed from std::forward<T>(t). The default co

Defined in header <cfenv> #define FE_DOWNWARD /*implementation defined*/ (since C++11) #define FE_TONEAREST /*implementation defined*/ (since C++11) #define FE_TOWARDZERO /*implementation defined*/ (since C++11) #define FE_UPWARD /*implementation defined*/ (since C++11) Each of these macro constants expands to a nonnegative integer constant expression, which can be used with std::fesetround and std::fegetround to indicate one of the supporte