diff --git a/others/buzz_number.cpp b/others/buzz_number.cpp
index f31038aad..ed9fc5f28 100644
--- a/others/buzz_number.cpp
+++ b/others/buzz_number.cpp
@@ -1,17 +1,20 @@
-//A buzz number is a number that is either divisble by 7 or has last digit as 7.
+/**
+ * @file
+ * @brief A buzz number is a number that is either divisible by 7 or has last
+ * digit as 7.
+ */
 #include <iostream>
-using namespace std;
-int main()
-{
-  int n, t;
-  cin >> t;
-  while (t--)
-  {
-    cin >> n;
-    if ((n % 7 == 0) || (n % 10 == 7))
-      cout << n << " is a buzz number" << endl;
-    else
-      cout << n << " is not a buzz number" << endl;
-  }
-  return 0;
+
+/** main function */
+int main() {
+    int n, t;
+    std::cin >> t;
+    while (t--) {
+        std::cin >> n;
+        if ((n % 7 == 0) || (n % 10 == 7))
+            std::cout << n << " is a buzz number" << std::endl;
+        else
+            std::cout << n << " is not a buzz number" << std::endl;
+    }
+    return 0;
 }