Defined in header <ios> typedef /*unspecified*/ streamoff; The type std::streamoff is a signed integral type of sufficient size to represent the maximum possible file size supported by the operating system. Typically, this is a typedef to long long. It is used to represent offsets from stream positions (values of type std::fpos). A std::streamoff value of -1 is also used to represent error conditions by some of the I/O library functions. Relationship with std::fpos the

Defined in header <ios> typedef /*unspecified*/ streamsize; The type std::streamsize is a signed integral type used to represent the number of characters transferred in an I/O operation or the size of an I/O buffer. It is used as a signed counterpart of std::size_t, similar to the POSIX type ssize_t. Except in the constructors of std::strstreambuf, negative values of std::streamsize are never used. See also gcount returns number of characters extracted by last unform

Defined in header <cstring> const char* strchr( const char* str, int ch ); char* strchr( char* str, int ch ); Finds the first occurrence of the character static_cast<char>(ch) in the byte string pointed to by str. The terminating null character is considered to be a part of the string. Parameters str - pointer to the null-terminated byte string to be analyzed ch - character to search for Return value Pointer to the found character

Defined in header <cstring> int strcmp( const char *lhs, const char *rhs ); Compares two null-terminated byte strings lexicographically. The sign of the result is the sign of the difference between the values of the first pair of characters (both interpreted as unsigned char) that differ in the strings being compared. The behavior is undefined if lhs or rhs are not pointers to null-terminated strings. Parameters lhs, rhs - pointers to the null-terminated byte string

Defined in header <cstring> int strcoll( const char* lhs, const char* rhs ); Compares two null-terminated byte strings according to the current locale as defined by the LC_COLLATE category. Parameters lhs, rhs - pointers to the null-terminated byte strings to compare Return value Negative value if lhs is less than (precedes) rhs. ​0​ if lhs is equal to rhs. Positive value if lhs is greater than (follows) rhs. Notes Collation order is the dictionary order: t

Defined in header <cstring> char* strcpy( char* dest, const char* src ); Copies the character string pointed to by src, including the null terminator, to the character array whose first element is pointed to by dest. The behavior is undefined if the dest array is not large enough. The behavior is undefined if the strings overlap. Parameters dest - pointer to the character array to write to src - pointer to the null-terminated byte string to copy from Retu

Defined in header <cstring> char *strcat( char *dest, const char *src ); Appends a copy of the character string pointed to by src to the end of the character string pointed to by dest. The character src[0] replaces the null terminator at the end of dest. The resulting byte string is null-terminated. The behavior is undefined if the destination array is not large enough for the contents of both src and dest and the terminating null character. The behavior is undefined if the

Defined in header <string> unsigned long stoul( const std::string& str, std::size_t* pos = 0, int base = 10 ); unsigned long stoul( const std::wstring& str, std::size_t* pos = 0, int base = 10 ); (1) (since C++11) unsigned long long stoull( const std::string& str, std::size_t* pos = 0, int base = 10 ); unsigned long long stoull( const std::wstring& str, std::size_t* pos = 0, int base = 10 ); (2) (since C++11) Interprets an unsigned integer va

Defined in header <string> int stoi( const std::string& str, std::size_t* pos = 0, int base = 10 ); int stoi( const std::wstring& str, std::size_t* pos = 0, int base = 10 ); (1) (since C++11) long stol( const std::string& str, std::size_t* pos = 0, int base = 10 ); long stol( const std::wstring& str, std::size_t* pos = 0, int base = 10 ); (2) (since C++11) long long stoll( const std::string& str, std::size_t* pos = 0, int base

Defined in header <string> float stof( const std::string& str, std::size_t* pos = 0 ); float stof( const std::wstring& str, std::size_t* pos = 0 ); (1) (since C++11) double stod( const std::string& str, std::size_t* pos = 0 ); double stod( const std::wstring& str, std::size_t* pos = 0 ); (2) (since C++11) long double stold( const std::string& str, std::size_t* pos = 0 ); long double stold( const std::wstring& str, std::size