char16_t - cppreference.com (original) (raw)
char16_t is an unsigned integer type used for 16-bit wide characters and is the same type as uint_least16_t.
[edit] Notes
On any given platform, by the definition of uint_least16_t, the width of type char16_t can be greater than 16 bits, but the actual values stored in an object of type char16_t will always have a width of 16 bits.
[edit] Example
#include <stdio.h> #include <uchar.h> int main(void) { const char16_t wcs[] = u"zß水🍌"; // or "z\u00df\u6c34\U0001f34c" const size_t wcs_sz = sizeof wcs / sizeof *wcs; printf("%zu UTF-16 code units: [ ", wcs_sz); for (size_t n = 0; n < wcs_sz; ++n) printf("%#x ", wcs[n]); printf("]\n"); }
Possible output:
6 UTF-16 code units: [ 0x7a 0xdf 0x6c34 0xd83c 0xdf4c 0 ]
[edit] References
C17 standard (ISO/IEC 9899:2018):
7.28 Unicode utilities <uchar.h> (p: 292)
7.20.1.2 Minimum-width integer types (p: 212-213)
C11 standard (ISO/IEC 9899:2011):
7.28 Unicode utilities <uchar.h> (p: 398)
7.20.1.2 Minimum-width integer types (p: 290)
C99 standard (ISO/IEC 9899:1999):
7.18.1.2 Minimum-width integer types (p: 256)