user2768374 user2768374 - 3 months ago 24
C Question

How to Read/Write UTF8 text files in C?

i am trying to read UTF8 text from a text file, and then print some of it to another file. I am using Linux and gcc compiler. This is the code i am using:

#include <stdio.h>
#include <stdlib.h>

int main(){
FILE *fin;
FILE *fout;
int character;
fin=fopen("in.txt", "r");
fout=fopen("out.txt","w");
while((character=fgetc(fin))!=EOF){
putchar(character); // It displays the right character (UTF8) in the terminal
fprintf(fout,"%c ",character); // It displays weird characters in the file
}
fclose(fin);
fclose(fout);
printf("\nFile has been created...\n");
return 0;
}


It works for English characters for now.

Answer

This code worked for me:

/* fgetwc example */
#include <stdio.h>
#include <wchar.h>
#include <stdlib.h>
#include <locale.h>
int main ()
{
  setlocale(LC_ALL, "en_US.UTF-8");
  FILE * fin;
  FILE * fout;
  wint_t wc;
  fin=fopen ("in.txt","r");
  fout=fopen("out.txt","w");
  while((wc=fgetwc(fin))!=WEOF){
        // work with: "wc"
  }
  fclose(fin);
  fclose(fout);
  printf("File has been created...\n");
  return 0;
}