fn                 20 extend.c       	char *fn;
fn                 40 extend.c       				if ((fn = (char *)strchr(++(*argv), '\n')) != NULL)
fn                 41 extend.c       					sprintf(fn, "\0"); 
fn                 42 extend.c       				fn = (char *)*argv;
fn                 43 extend.c       				if ((fp = fopen(fn, "r")) == NULL) {