scan3(expect1, expect2, expect3, tokp) tok_kind expect1; tok_kind expect2; tok_kind expect3; token *tokp;
scan3(tok_kind expect1, tok_kind expect2, tok_kind expect3, token *tokp)
scan3(expect1, expect2, expect3, tokp)	tok_kind expect1;	tok_kind expect2;	tok_kind expect3;	token *tokp;{	get_token(tokp);	if (tokp->kind != expect1 && tokp->kind != expect2	    && tokp->kind != expect3) {		expected3(expect1, expect2, expect3);	}}