What is the difference between a while statement and a do statement

A while statement checks at the beginning of a loop to see whether the next loop iterationshould occur. A do statement checks at the end of a loop to see whether the next iterationof a loop should occur. The do statement will always execute the body of a loop at leastonce.

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Aug 26th, 2004
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MANISHA PATHAK
Profile Answers by MANISHA PATHAK

Oct 26th, 2006

syntax of while is as :
while(condition)
{
}
In while statement,first condition is checked,if the condition is true then the statements within loop are executed otherwise statements within loop are not executed.
syntax of do-while as :
do
{
}
while(condition);
In do-while statement,first the statements are executed then condition is checked,if the condition is true then only further the loop is executed otherwise not.

sujatham
Profile Answers by sujatham Questions by sujatham

Jul 29th, 2007

while is an entry controlled loop.
do-while is a exit controlled loop.

jackshon9
Profile Answers by jackshon9

Jun 27th, 2011

In While loop first condition will be checked and if it is true then code inside condition will performed. While in Do..While loop first code is performed one time afterwords condition will checked.