diff --git a/data_structure/queue_using_linkedlist.cpp b/data_structure/queue_using_linkedlist.cpp
index a27d3db37..8bc130c27 100644
--- a/data_structure/queue_using_linkedlist.cpp
+++ b/data_structure/queue_using_linkedlist.cpp
@@ -94,4 +94,5 @@ int main(){
             std::cout<<"\nWrong choice ";
 
     }
+    return 0;
 }