From d9d53cbdaea6f3e87af19587504be04f66467f8f Mon Sep 17 00:00:00 2001
From: Sadeep Madurange <smadurange@users.noreply.github.com>
Date: Sat, 18 Dec 2021 15:16:31 +0800
Subject: 4.10

---
 4/10.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/4/10.c b/4/10.c
index 83a9053..c89bf0b 100644
--- a/4/10.c
+++ b/4/10.c
@@ -50,8 +50,8 @@ int main(int argc, char *argv[]) {
         push(op1 + op2);
         break;
       case '-':
-        op1 = pop();
         op2 = pop();
+        op1 = pop();
         push(op1 - op2);
         break;
       case '*':
@@ -147,7 +147,7 @@ int getop(char s[]) {
 
   // special characters and operators
   if (c == 0 || c == '+' || c == '*' || c == '/' || c == '%' || c == '\n' ||
-      (c == '-' && !isdigit(line[idx + 1])) || c == EOF)
+      (c == '-' && !isdigit(line[idx])) || c == EOF)
     return c;
 
   i = 0;
-- 
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