Update stack.c

sadeem-albir · web-flow · commit 82290549c31f · 2024-02-15T22:58:08.000+03:00
The else part in "if (c == '-')" for some reason caused a calculation like "33 44 +" to evaluate to 7. After removing that else part, the output gives the desired result.
diff --git a/chapter_4/exercise_4_04/stack.c b/chapter_4/exercise_4_04/stack.c
@@ -215,10 +215,11 @@ int getop(char s[])
       s[++i] = c = next;
     }
   }
-  else
-  {
-    c = getch();
-  }
+//  else
+//  {
+//    c = getch();
+//  }
+// This else block caused '33 44+' to output 7 instead of 77
 
   if (isdigit(c))
   {

Original file line number	Diff line number	Diff line change
`@@ -215,10 +215,11 @@ int getop(char s[])`
`215`	`215`	`s[++i] = c = next;`
`216`	`216`	`}`
`217`	`217`	`}`
`218`		`- else`
`219`		`- {`
`220`		`- c = getch();`
`221`		`- }`
	`218`	`+// else`
	`219`	`+// {`
	`220`	`+// c = getch();`
	`221`	`+// }`
	`222`	`+// This else block caused '33 44+' to output 7 instead of 77`
`222`	`223`
`223`	`224`	`if (isdigit(c))`
`224`	`225`	`{`