| Defined in header <cctype> | ||
|---|---|---|
int toupper( int ch ); |
Converts the given character to uppercase according to the character conversion rules defined by the currently installed C locale.
In the default "C" locale, the following lowercase letters abcdefghijklmnopqrstuvwxyz are replaced with respective uppercase 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
Converted character or ch if no uppercase version is defined by the current C locale.
Example
#include <iostream>
#include <cctype>
#include <clocale>
int main()
{
unsigned char c = '\xb8'; // the character ž in ISO-8859-15
// but ¸ (cedilla) in ISO-8859-1
std::setlocale(LC_ALL, "en_US.iso88591");
std::cout << std::hex << std::showbase;
std::cout << "in iso8859-1, toupper('0xb8') gives " << std::toupper(c) << '\n';
std::setlocale(LC_ALL, "en_US.iso885915");
std::cout << "in iso8859-15, toupper('0xb8') gives " << std::toupper(c) << '\n';
}Output:
in iso8859-1, toupper('0xb8') gives 0xb8
in iso8859-15, toupper('0xb8') gives 0xb4See also
| converts a character to lowercase (function) | |
| converts a character to uppercase using the ctype facet of a locale (function template) | |
| converts a wide character to uppercase (function) | |
C documentation for toupper | |
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