added a small statement (#23119)

* added a small statement

* Fixed formatting

guide/english/cplusplus/do-while-loop/index.md

@@ -2,8 +2,9 @@
 title: do while loop
 ---
 ## Do While Loop
+This is just like the `while` and `for` loop but the only difference is that the code in its body is executed once before checking the condition.
 
-The `do while loop` is almost the same as the while loop. The `do while loop` has the following form:
+The `do while` loop has the following form:
 ```cpp
 do 
 {
@@ -20,6 +21,8 @@ The do-while loop is used whenever you are sure that a particular process(within
 
 Do something first and then test if we have to continue. The result is that the do block runs at least once. (Because the expression test comes afterward) . Take a look at an example:
 
+
+
 ```cpp
 #include <iostream>
 	using namespace std;