do … while
do {
   THIS
} while(TRUE);
Example:
#include <iostream.h>
int main()
{
int x;
x = 0;
do {
   cout << “Hello, world!”;
} while (x != 0);
return 0;
}
Comment to example: Loop while x is not zero, ut first execute the code in the section. (It outputs "Hello..." once.
Keep in mind that you must include a trailing semi-colon after while in the above example. Notice that this loop will also execute once, because it automatically executes before checking the truth statement.