From 4eaf8f943b1cfe68364c3334d09c61ae0d42e41e Mon Sep 17 00:00:00 2001
From: Sadeep Madurange <smadurange@users.noreply.github.com>
Date: Mon, 20 Dec 2021 19:17:16 +0800
Subject: 4.11

---
 4/11.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to '4/11.c')

diff --git a/4/11.c b/4/11.c
index bf224c7..54bafcf 100644
--- a/4/11.c
+++ b/4/11.c
@@ -6,6 +6,7 @@
 
 #define MAXOP 100
 #define HEIGHT 1000
+#define BUFSIZE 100
 
 #define NUM '0'
 #define FUN '1'
@@ -118,6 +119,11 @@ int main(int argc, char *argv[]) {
   return 0;
 }
 
+int bufp = 0;
+char buf[BUFSIZE];
+
+int getch() { return (bufp > 0) ? buf[--bufp] : getchar(); }
+
 int sp = 0;
 double stack[HEIGHT];
 
-- 
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