diff --git a/logicalproblem02.cpp b/logicalproblem02.cpp
index e865de2..f45ee82 100644
--- a/logicalproblem02.cpp
+++ b/logicalproblem02.cpp
@@ -3,7 +3,7 @@ using namespace std;
 
 bool check(char a, char b)
 {
-    // write the function here
+    return (a ^ b) == 0;
 }
 
 int main()