diff --git a/du3/program.c b/du3/program.c
index 31d0c54..be37d71 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -87,9 +87,10 @@ int main()
         struct stack mystack;
         memset(&mystack,0,sizeof(struct stack));
         char input[1000];
-	int count=0;
+	int no_in=0;
         while (fgets(input,sizeof(input),stdin)!=NULL)
         {
+		no_in=1;
             int flag=switch_operators(input);
             input[strcspn(input,"\n")]=0;
             if (strlen(input)==0 || input[0]==' ') 
@@ -109,7 +110,11 @@ int main()
                 push_stack(&mystack,num);
             }
             print_stack(&mystack);
-        }        
+        }
+	if(!no_in)
+	{
+		printf("no input");
+	}	
         return 0;
 }