diff --git a/cv3/program.c b/cv3/program.c
index e0c6007..30f9d75 100644
--- a/cv3/program.c
+++ b/cv3/program.c
@@ -12,7 +12,9 @@ int main() {
     double result = 0.0;
 
      while (count < SIZE) {
+        printf('+');
         if (scanf("%lf", &input) != 1 && input != '\n') {
+            printf('-');
             return 0;
         }