mbrtoc32() in C++

mbrtoc32(): This function is available in the file uchar.h.The multibyte character pointed by pmb is converted to a 32-bit character and stored at the location pointed by pc32. This function returns the length in bytes of the multibyte character (up to the max).

Syntax:

size_t mbrtoc32 ( char32_t * pc32, const char * pmb, size_t max, mbstate_t * ps)

Parameters: Four parameters are required for this function.

pc32:Pointer to an object of type char32_t.

pmb: Pointer to the first byte of a multibyte character.

max: Maximum number of bytes to read from pmb. The macro constant MB_CUR_MAX defines the maximum number of bytes that can form a multibyte character under the current locale settings.

ps: Pointer to a mbstate_t object that defines a conversion state.

Note: It returns the number of bytes from pmb used to produce the 32-bit character.

Approach

C++

#include <bits/stdc++.h>
using namespace std;

int main()
{

    mbstate_t ps;
    char32_t pc32;
    char s[] = "ABCD";
    int length = mbrtoc32(&pc32, s, MB_CUR_MAX, &ps);

    if (length < 0)
    {
        cout << "Failed\n";
    }
    else
    {
        cout << length << "\n";
        cout << pc32 << "\n";
    }
    return 0;

    return 0;
}