Function fopen_orDie

freebsd/contrib/zstd/examples/common.h:99–106

! fopen_orDie() : * Open a file using given file path and open option. * * @return If successful this function will return a FILE pointer to an * opened file otherwise it sends an error to stderr and exits. */

 * opened file otherwise it sends an error to stderr and exits.
 */
static FILE* fopen_orDie(const char *filename, const char *instruction)
{
    FILE* const inFile = fopen(filename, instruction);
    if (inFile) return inFile;
    /* error */
    perror(filename);
    exit(ERROR_fopen);
}

/*! fclose_orDie() :
 * Close an opened file using given FILE pointer.