Why do I get a 'ÿ' char after every include that is extracted by my parser? - C

Question

I have this function:

/*This func runs *.c1 file, and replace every include file with its content
It will save those changes to *.c2 file*/
void includes_ext         


        

Answer 1

"ÿ" corresponds to the code point 0xFF. fgetc returns EOF when the end of file is reached, which is (usually) defined as -1. Store -1 in a char and you'll wind up with 0xFF. You must check for EOF between calling fgetc and fpuc.

int ch;
...
/*copy header file content to *.c2 file*/
for (ch=fgetc(header_fp); ch > -1; ch=fgetc(header_fp)) {
   fputc(ch,c2_fp);
}

Instead of getting characters one at a time, you could use fgets to get a block of characters.

#ifndef BUFSIZE
#  define BUFSIZE 1024
#endif
char buf[BUFSIZE], *read;
...
/*copy header file content to *.c2 file*/
while ((read = fgets(buf, BUFSIZE, header_fp))) {
    fputs(buf, c2_fp);
}