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std::tolower

提供: cppreference.com
< cpp‎ | string‎ | byte

 
 
ストリングスライブラリ
NULLで終わる文字列
Original:
Null-terminated strings
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バイト文字列
文字列をマルチバイト
ワイド文字列
クラス
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Classes
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basic_string
char_traits
 
NULL終端バイト文字列
機能します
Original:
Functions
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文字操作
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Character manipulation
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数値形式への変換
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Conversions to numeric formats
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文字列操作
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String manipulation
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strcpy
strncpy
strcat
strncat
strxfrm
文字列の検査
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String examination
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メモリ操作
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Memory manipulation
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memchr
memcmp
memset
memcpy
memmove
その他
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Miscellaneous
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strerror
 
Defined in header <cctype>
int tolower( int ch );
現在インストールされているCロケールで定義された文字の変換規則に従って小文字に指定された文字を変換します.
Original:
Converts the given character to lowercase according to the character conversion rules defined by the currently installed C locale.
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目次

[編集] パラメータ

ch -
文字が変換されることになります
Original:
character to be converted
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[編集] 値を返します

全く小文字バージョンは、現在のCロケールでchまたは変更されていないch小文字バージョンのリストにも存在しなければ.
Original:
Lowercase version of ch or unmodified ch if no lowercase version is listed in the current C locale.
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[編集]

#include <iostream>
#include <cctype>
#include <clocale>
 
int main()
{
    char c = '\xb4'; // the character Ž in ISO-8859-15
                     // but ´ (acute accent) in ISO-8859-1 
 
    std::setlocale(LC_ALL, "en_US.iso88591");
    std::cout << std::hex << std::showbase;
    std::cout << "in iso8859-1, tolower('0xb4') gives "
              << std::tolower(c) << '\n';
    std::setlocale(LC_ALL, "en_US.iso885915");
    std::cout << "in iso8859-15, tolower('0xb4') gives "
              << std::tolower(c) << '\n';
}

Output:

in iso8859-1, tolower('0xb4') gives 0xb4
in iso8859-15, tolower('0xb4') gives 0xb8

[編集] も参照してください

文字を大文字に変換します
Original:
converts a character to uppercase
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(機能) [edit]
converts a character to lowercase using the ctype facet of a locale
(関数テンプレート) [edit]
小文字にワイド文字に変換します
Original:
converts a wide character to lowercase
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(機能) [edit]
C documentation for tolower