| Defined in header <cctype> | ||||
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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.
Parameters
| ch | - | character to be converted. If the value of ch is not representable as unsigned char and does not equal EOF, the behavior is undefined |
Return value
Lowercase version of ch or unmodified ch if no lowercase version is listed in the current C locale.
Example
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | #include <iostream>#include <cctype>#include <clocale> int main(){ unsigned 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:
1 2 | in iso8859-1, tolower('0xb4') gives 0xb4in iso8859-15, tolower('0xb4') gives 0xb8 |
See 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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