void file_compress(file, mode)
void file_compress(file)
void file_compress(file, mode)    char  *file;    char  *mode;{    local char outfile[MAX_NAME_LEN];    FILE  *in;    gzFile out;    strcpy(outfile, file);    strcat(outfile, GZ_SUFFIX);    in = fopen(file, "rb");    if (in == NULL) {        perror(file);        exit(1);    }    out = gzopen(outfile, mode);    if (out == NULL) {        fprintf(stderr, "%s: can't gzopen %s\n", prog, outfile);        exit(1);    }    gz_compress(in, out);    unlink(file);}