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mbrtowc() function in C/C++
This mbrtowc() function is used to convert multibyte sequence to wide character string. This returns the length of the multibyte characters in byte. The syntax is like below.
mbrtowc (wchar_t* wc, const char* s, size_t max, mbstate_t* ps)
The arguments are −
- wc is the pointer which points where the resulting wide character will be stored.
- s is the pointer to multibyte character string as input
- max is the maximum number of bytes in s, that can be examined
- ps is pointing to the conversion state, when interpreting multibyte string.
Example
#include <bits/stdc++.h>
using namespace std;
void display(const char* s) {
mbstate_t ps = mbstate_t(); // initial state
int s_len = strlen(s);
const char* n = s + s_len;
int len;
wchar_t wide_char;
while ((len = mbrtowc(&wide_char, s, n - s, &ps)) > 0) {
wcout << "The following " << len << " bytes are for the character " << wide_char << '\n';
s += len;
}
}
main() {
setlocale(LC_ALL, "en_US.utf8");
const char* str = u8"z\u00cf\u7c38\U00000915";
display(str);
}Output
The following 1 bytes are for the character z The following 2 bytes are for the character Ï The following 3 bytes are for the character 簸 The following 3 bytes are for the character क
Updated on: 30-Jul-2019
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