diff --git a/homework1/test1.cpp b/homework1/test1.cpp
index e4b4d3e..f41f3ae 100644
--- a/homework1/test1.cpp
+++ b/homework1/test1.cpp
@@ -21,7 +21,7 @@ int input(book *books) {
 
 void output(book *books, int length) {
     for (int i = 0; i < length; i++) {
-        cout << books[i].id << "\t" << books[i].name << "\t" << fixed << setprecision(2) << books[i].price << endl;
+        cout << books[i].id << " " << books[i].name << " " << fixed << setprecision(2) << books[i].price << endl;
     }
 }
 
diff --git a/homework1/test2.cpp b/homework1/test2.cpp
index 12ec9c1..c56cd33 100644
--- a/homework1/test2.cpp
+++ b/homework1/test2.cpp
@@ -37,7 +37,7 @@ int input(book *books) {
 
 void output(book *books, int length) {
     for (int i = 0; i < length; i++) {
-        cout << books[i].id << "\t" << books[i].name << "\t" << fixed << setprecision(2) << books[i].price << endl;
+        cout << books[i].id << " " << books[i].name << " " << fixed << setprecision(2) << books[i].price << endl;
     }
 }
 
diff --git a/homework1/test3.cpp b/homework1/test3.cpp
index 0b52054..2effad1 100644
--- a/homework1/test3.cpp
+++ b/homework1/test3.cpp
@@ -27,7 +27,7 @@ int input(book *books) {
 
 void output(book *books, int length) {
     for (int i = 0; i < length; i++) {
-        cout << books[i].id << "\t" << books[i].name << "\t" << fixed << setprecision(2) << books[i].price << endl;
+        cout << books[i].id << " " << books[i].name << " " << fixed << setprecision(2) << books[i].price << endl;
     }
 }
 
diff --git a/homework1/test4.cpp b/homework1/test4.cpp
index 9542a52..babaa37 100644
--- a/homework1/test4.cpp
+++ b/homework1/test4.cpp
@@ -47,7 +47,7 @@ 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 = 0; i < books_and_number.number_of_books; i++) {
-        cout << books_and_number.books[i].id << "\t" << books_and_number.books[i].name << "\t" << fixed <<
+        cout << books_and_number.books[i].id << " " << books_and_number.books[i].name << " " << fixed <<
                 setprecision(2) <<
                 books_and_number.books[i].price << endl;
     }