C : read and write UTF-8 file

utf8.c

/* fgetwc example */
#include <stdio.h>
#include <wchar.h>
int main()
{
    FILE *fin;
    FILE *fout;
    wint_t wc;
    fin = fopen("in.txt", "r");
    fout = fopen("out.txt", "w");
    while ((wc = fgetwc(fin)) != WEOF)
    {
       printf("%c",wc);
       fputwc(wc,fout);
    }
    fclose(fin);
    fclose(fout);
    printf("File has been created...\n");
    return 0;
}