Difference between revisions of "cpp/string/byte/tolower"
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Converts the given character to lowercase according to the character conversion rules defined by the currently installed C locale. | Converts the given character to lowercase according to the character conversion rules defined by the currently installed C locale. | ||
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| + | In the default "C" locale, the following uppercase letters {{tt|ABCDEFGHIJKLMNOPQRSTUVWXYZ}} are replaced with respective lowercase letters {{tt|abcdefghijklmnopqrstuvwxyz}}. | ||
===Parameters=== | ===Parameters=== | ||
Revision as of 05:24, 16 October 2013
| Defined in header <cctype>
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| int tolower( int ch ); |
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Converts the given character to lowercase according to the character conversion rules defined by the currently installed C locale.
In the default "C" locale, the following uppercase letters ABCDEFGHIJKLMNOPQRSTUVWXYZ are replaced with respective lowercase letters abcdefghijklmnopqrstuvwxyz.
Contents |
Parameters
| ch | - | character to be converted |
Return value
Lowercase version of ch or unmodified ch if no lowercase version is listed in the current C locale.
Example
Run this code
#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 0xb8See also
| converts a character to uppercase (function) | |
converts a character to lowercase using the ctype facet of a locale (function template) | |
| converts a wide character to lowercase (function) | |
| C documentation for tolower
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