diff --git a/cv3/program.c b/cv3/program.c
index 1f1e19a..251026c 100644
--- a/cv3/program.c
+++ b/cv3/program.c
@@ -42,7 +42,7 @@ int main() {
     StEk stek;
     inicStEk(&stek);
     char bufer[256];
-    while (fgets(bufer, sizeof(bufer), stdin)) {
+    while (fgets(bufer, sizeof(bufer), stdin) != NULL) {
         char* konec;
         double chislo = strtod(bufer, &konec);
         if (*konec == '\n' && *bufer != '\n' && *bufer != ' ') {
@@ -104,5 +104,6 @@ int main() {
         }
         printf("\n");
     }
+    printf("no input\n");
     return 0;
 }
\ No newline at end of file