A " do...while " loop runs the code before testing the condition. This guarantees that the code will be executed at least once, even if the condition is already false. On the other hand, a conventional " while " loop tests the condition first, and if it is false the code is not executed at all. For more information get help at
In case of while loop if the condition is true then only programs enters the logic whereas in case of do while loop the condition is not checked first the program executes the logic once and then goes to condition i.e,even if the condition is true or not the logic is executed once.
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