document stairs print

others/stairs_pattern.cpp

@@ -1,31 +1,35 @@
-/*
-This program is use to print the following pattern
-   **
-   **
-  ****
-  ****
- ******
- ******
-********
-********
-where number of pairs line is given by user  
+/**
+ * @file
+@brief This program is use to print the following pattern<pre>
+   \*\*
+   \*\*
+  \*\*\*\*
+  \*\*\*\*
+ \*\*\*\*\*\*
+ \*\*\*\*\*\*
+\*\*\*\*\*\*\*\*
+********</pre>
+where number of pairs line is given by user
 */
-#include<iostream>
+#include <iostream>
+
+/** main function */
 int main() {
-int l, st = 2, x, r, z, n, sp;
-std::cout << "enter Index ";
-std::cin >> x;
-z = x;
-for (r = 1; r <= x; r++) {
-z = z - 1;
-for (n = 1; n <= 2; n++) {
-for (sp = 1; sp <= z; sp++) {
-std::cout << " ";
+    int l, st = 2, x, r, z, n, sp;
+    std::cout << "enter Index ";
+    std::cin >> x;
+    z = x;
+    for (r = 1; r <= x; r++) {
+        z = z - 1;
+        for (n = 1; n <= 2; n++) {
+            for (sp = 1; sp <= z; sp++) {
+                std::cout << " ";
+            }
+            for (l = 1; l <= st; l++) {
+                std::cout << "*";
+            }
+            std::cout << std::endl;
+        }
+        st = st + 2;
+    }
 }
-for (l = 1; l <= st; l++) {
-std::cout << "*";
-}
-std::cout <<"\n";
-}
-st = st + 2;
-}}