diff --git a/scope.cpp b/scope.cpp
index 75286c6..38725f8 100644
--- a/scope.cpp
+++ b/scope.cpp
@@ -3,6 +3,7 @@ using namespace std;
 
 int globalVariable;
 int localVariable = 25;
+// Value of a global variable persists between different function calls.
 
 int main(int argc, char const *argv[]){
 
@@ -19,4 +20,4 @@ int main(int argc, char const *argv[]){
 	cout << "Value of localVariable  is " << localVariable << endl;
 
 	return 0;
-}
\ No newline at end of file
+}