diff --git a/cv3/program.c b/cv3/program.c
index 0e2b911..31c15b9 100644
--- a/cv3/program.c
+++ b/cv3/program.c
@@ -34,6 +34,10 @@ int main() {
             printf("%.2f \n",databaza[counter-2].price);
         }
         if(input[0] == '/'){
+            if(databaza[counter-1].price == '0'){
+                printf("division by zero");
+                return 0;
+            }
             printf("%.2f \n",databaza[counter-2].price);
             printf("%.2f %.2f \n",databaza[counter-2].price, databaza[counter-1].price);
             databaza[counter-2].price = databaza[counter-2].price / databaza[counter-1].price;