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std::btowc

From cppreference.com
< cpp‎ | string‎ | multibyte
 
C++
 
Text processing library
 
Null-terminated multibyte strings
 
Defined in header <cwchar>
std::wint_t btowc( int c );

Widens a single-byte character c to its wide character equivalent.

Most multibyte character encodings use single-byte codes to represent the characters from the ASCII character set. This function may be used to convert such characters to wchar_t.

Contents

[edit] Parameters

c - single-byte character to widen

[edit] Return value

WEOF if c is EOF.

Wide character representation of c if (unsigned char)c is a valid single-byte character in the initial shift state, WEOF otherwise.

[edit] Example

Run this code
#include <clocale>
#include <cwchar>
#include <iostream>
 
void try_widen(char c)
{
    std::wint_t w = std::btowc(c);
    if (w != WEOF)
        std::cout << "The single-byte character " << +(unsigned char)c
                  << " widens to " << +w << '\n';
    else
        std::cout << "The single-byte character " << +(unsigned char)c
                  << " failed to widen\n";
}
 
int main()
{
    std::setlocale(LC_ALL, "lt_LT.iso88594");
    std::cout << std::hex <<