diff --git a/cv3/program.c b/cv3/program.c
index 00adfe3..008266a 100644
--- a/cv3/program.c
+++ b/cv3/program.c
@@ -14,9 +14,9 @@ void print_stack(struct stack* s) {
     for (int i = 0; i < s->size; i++) {
         printf("%.2f", s->values[i]);
         if (i < s->size - 1) {
-            printf(" "); 
+            printf(" ");
         } else {
-            printf(" "); 
+            printf(" ");
         }
     }
     printf("\n");
@@ -25,7 +25,7 @@ void print_stack(struct stack* s) {
 void push_stack(struct stack* s, float value) {
     if (s->size >= STACK_SIZE) {
         printf("Chyba: zasobnik je plny\n");
-        exit(0);
+        exit(1);
     }
     s->values[s->size++] = value;
 }
@@ -33,7 +33,7 @@ void push_stack(struct stack* s, float value) {
 float pop_stack(struct stack* s) {
     if (s->size == 0) {
         printf("Chyba: zasobnik je prazdny\n");
-        exit(0);
+        exit(1);
     }
     return s->values[--s->size];
 }
@@ -46,7 +46,7 @@ int is_operator(char* input) {
 void perform_operation(struct stack* s, char* operator) {
     if (s->size < 2) {
         printf("Chyba: nedostatok operandov\n");
-        exit(0);
+        exit(1);
     }
 
     float b = pop_stack(s);
@@ -62,12 +62,12 @@ void perform_operation(struct stack* s, char* operator) {
     } else if (strcmp(operator, "/") == 0) {
         if (b == 0) {
             printf("division by zero\n");
-            exit(0);
+            exit(1);
         }
         result = a / b;
     } else {
         printf("Chyba: neplatna operacia\n");
-        exit(0);
+        exit(1);
     }
 
     push_stack(s, result);
@@ -84,15 +84,11 @@ int main() {
         float value;
         if (sscanf(input, "%f", &value) == 1) {
             push_stack(&mystack, value);
-        }
-
-        else if (is_operator(input)) {
+        } else if (is_operator(input)) {
             perform_operation(&mystack, input);
-        }
-
-        else {
+        } else {
             printf("bad input\n");
-            return 0;
+            return 1;
         }
 
         print_stack(&mystack);