From 4c2a037165c21ac8fd1007824be72a2a8d61e74e Mon Sep 17 00:00:00 2001 From: Sadeep Madurange Date: Sun, 12 Dec 2021 16:54:41 +0800 Subject: 4.8 --- 4/8.c | 28 +++++----------------------- 1 file changed, 5 insertions(+), 23 deletions(-) (limited to '4/8.c') diff --git a/4/8.c b/4/8.c index 355b29a..b81378e 100644 --- a/4/8.c +++ b/4/8.c @@ -155,31 +155,13 @@ void clear() { ; } -int pushb = 0; -int pushbval = 0; - -int getch() { - if (pushb) { - pushb = 0; - return pushbval; - } - return (bufp > 0) ? buf[--bufp] : getchar(); -} +int getch() { return (bufp > 0) ? buf[--bufp] : getchar(); } void ungetch(int c) { - pushbval = c; - pushb = 1; -} - -void ungets(char s[]) { - int len, i; - len = strlen(s); - if (bufp + len - 1 >= BUFSIZE) - printf("ungets: too many characters\n"); - else { - for (i = len; i >= 0; i--) - buf[bufp++] = s[i]; - } + if (bufp >= BUFSIZE) + printf("ungetch: too many characters\n"); + else + buf[bufp++] = c; } int getop(char s[]) { -- cgit v1.2.3