diff --git a/homework1/test4.cpp b/homework1/test4.cpp
index 185b391..5a363a8 100644
--- a/homework1/test4.cpp
+++ b/homework1/test4.cpp
@@ -49,7 +49,7 @@ void input(book *books, int n) {
 
 void output(book_and_number *books_and_number) {
     cout << books_and_number->number_of_books << endl;
-    for (int i = 1; i < books_and_number->number_of_books + 1; i++) {
+    for (int i = 0; i < books_and_number->number_of_books; i++) {
         cout << books_and_number->books[i].id << " " << books_and_number->books[i].name << " " << fixed <<
                 setprecision(2) <<
                 books_and_number->books[i].price << endl;