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<string>

 

Defines the container template class basic_string and various supporting templates.

For more information about basic_string, see basic_string Class

#include <string>

The C++ language and the Standard C++ Library support two types of strings:

  • Null-terminated character arrays often referred to as C strings.

  • Template class objects, of type basic_string, that handle all char-like template arguments.


string

A type that describes a specialization of the template class basic_string with elements of type char as a string.

wstring

A type that describes a specialization of the template class basic_string with elements of type wchar_t as a wstring.

u16string

A type that describes a specialization of the template class basic_string based on elements of type char16_t.

u32string

A type that describes a specialization of the template class basic_string based on elements of type char32_t.

operator+

Concatenates two string objects.

operator!=

Tests if the string object on the left side of the operator is not equal to the string object on the right side.

operator==

Tests if the string object on the left side of the operator is equal to the string object on the right side.

operator<

Tests if the string object on the left side of the operator is less than to the string object on the right side.

operator<=

Tests if the string object on the left side of the operator is less than or equal to the string object on the right side.

operator<<

A template function that inserts a string into the output stream.

operator>

Tests if the string object on the left side of the operator is greater than to the string object on the right side.

operator>=

Tests if the string object on the left side of the operator is greater than or equal to the string object on the right side.

operator>>

A template function that extracts a string from the input stream.

swap

Exchanges the arrays of characters of two strings.

stod

Converts a character sequence to a double.

stof

Converts a character sequence to a float.

stoi

Converts a character sequence to an integer.

stold

Converts a character sequence to a long double.

stoll

Converts a character sequence to a long long.

stoul

Converts a character sequence to an unsigned long.

stoull

Converts a character sequence to an unsigned long long.

to_string

Converts a value to a string.

to_wstring

Converts a value to a wide string.

getline Template Function

Extract strings from the input stream line by line.

basic_string Class

A template class that describes objects that can store a sequence of arbitrary character-like objects.

char_traits Struct

A template class that describes attributes associated with a character of type CharType

char_traits<char> Struct

A struct that is a specialization of the template struct char_traits<CharType> to an element of type char.

char_traits<wchar_t> Struct

A struct that is a specialization of the template struct char_traits<CharType> to an element of type wchar_t.

char_traits<char16_t> Struct

A struct that is a specialization of the template struct char_traits<CharType> to an element of type char16_t.

char_traits<char32_t> Struct

A struct that is a specialization of the template struct char_traits<CharType> to an element of type char32_t.

Requirements

  • Header: <string>

  • Namespace: std

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