関連ワード:  explain while loop and do while loop with example    explain while loop and do while loop    explain while loop and do while loop in c    explain while loop and do while loop in php    what is while loop and do while loop    define while loop and do while loop    what is while loop and do while loop in java    define while loop and do while loop with codes    explain difference between while loop and do while loop    explain for loop while loop and do while loop with syntax