Properly handled a case when addition was wrongly assumed

input_resolver.cpp

@@ -71,7 +71,7 @@ Command resolveCommand()
 
     bool shouldQuit = token.find("q") != token.npos;
     bool shouldPrint = token.find("p") != token.npos;
-    char operation;
+    char operation = 0;
 
     for (const char c: token)
     {
@@ -80,10 +80,11 @@ Command resolveCommand()
         {
             operation = c;
         }
-        else
+    }
-        {
+
-            operation = '+';
+    if (operation == 0)
-        }
+    {
+        operation = '+';
     }
 
     return {shouldQuit, operation, validation_result.next_arg(), shouldPrint};