diff --git a/cv3/program.c b/cv3/program.c
index 4a11359..25cfcc0 100644
--- a/cv3/program.c
+++ b/cv3/program.c
@@ -11,7 +11,7 @@ int stack_top = -1;
 bool is_number(char *string) {
     char *end;
     strtof(string, &end);
-    return end != string && *end == '\0';
+    return end != string && *end == '\n';
 }
 
 bool is_operation(char *string) {
@@ -33,7 +33,7 @@ float calculator(float n1, float n2, char operation) {
             return n1 / n2;
         } else {
             printf("Error: division by zero\n");
-            exit(1);
+            return 0;
         }
     }
     return 0;
@@ -44,7 +44,6 @@ void push(float number) {
         stack[++stack_top] = number;
     } else {
         printf("Error: stack overflow\n");
-        exit(1);
     }
 }
 
@@ -53,7 +52,7 @@ float pop() {
         return stack[stack_top--];
     } else {
         printf("Error: stack is empty\n");
-        exit(1);
+        return 0;
     }
 }
 
@@ -70,12 +69,12 @@ int main() {
         if (is_number(arr)) {
             float number = strtof(arr, &pend);
             push(number);
-            printf("Number added: %.2f\n", number);
+            printf("%.2f ", number);
         }
         else if (is_operation(arr)) {
             if (stack_top < 1) {
-                printf("Error: not enough numbers in the stack for operation\n");
-                return 1;
+                printf("no input\n");
+                continue;
             }
 
             float n2 = pop();
@@ -83,18 +82,18 @@ int main() {
             char operation = arr[0];
             float result = calculator(n1, n2, operation);
             push(result);
-            printf("Operation result: %.2f\n", result);
+            printf("%.2f ", result);
         }
         else {
-            printf("Error: invalid input\n");
-            return 1;
+            printf("no input\n");
+            continue;
         }
     }
 
     if (stack_top == 0) {
-        printf("Final result: %.2f\n", pop());
+        printf("\n%.2f\n", pop());
     } else {
-        printf("Error: stack contains more than one number after operations\n");
+        printf("\nno input\n");
     }
 
     return 0;