diff --git a/cv3/program.c b/cv3/program.c
index 4f40213..d10ebbe 100644
--- a/cv3/program.c
+++ b/cv3/program.c
@@ -30,6 +30,10 @@ int main(){
                 }
             }
                 if(vstup[0] == '/'){
+                if(mystack.values[1] == 0){
+                    printf("division by zero\n");
+                    return 0;
+                }
                 mystack.values[0] = mystack.values[0] / mystack.values[1];
                 for(int i = 1; mystack.values[i] != 0;i++){
                     mystack.values[i] = mystack.values[i+1];
@@ -61,7 +65,7 @@ int main(){
             
         }
         mystack.size = counter;
-        for(int i =0; mystack.values[i] != 0;i++){
+        for(int i =0; i < counter;i++){
             printf("%.2f ", mystack.values[i]);
         }
         printf("\n");