diff --git a/du2/program.c b/du2/program.c
index b055aca..ca1e8d5 100644
--- a/du2/program.c
+++ b/du2/program.c
@@ -1,5 +1,5 @@
 #include <stdio.h>
-
+#include <string.>
 
 int main(){
     double koef=0;
@@ -10,8 +10,11 @@ int main(){
         printf("Nepodarilo sa nacitat zaklad x\n");
         return 0;
          }else{ while (scanf("%lf", &koef) == 1) {
+            if(strlen(koef) !='\0'){
         rishennia=rishennia*a +koef;
         i++;
+            }else{ printf("Vysledok je: %.2f\n", rishennia);
+                   return 0; }
             }
            if (feof(stdin)) {
                   printf("Vysledok je: %.2f\n", rishennia);