fp                 24 extend.c       	FILE *fp = NULL;
fp                 43 extend.c       				if ((fp = fopen(fn, "r")) == NULL) {
fp                137 extend.c       	if (fp != NULL) {
fp                138 extend.c       		while (fgets(line, sizeof(line), fp) != NULL)
fp                153 extend.c       		fclose(fp);