Both of these loops are types of statements used in these languages, but there is a fundamental difference between while and do-while loop in C, C++, Java. In this article, we will discuss the same in a tabular form. But let us first know a bit more about each of these.
What is a while loop?
Here, the while loop refers to a control flow statement that basically lets the execution of a code on the basis of any given Boolean condition. Therefore, we can think of a while loop as a type of a repeating it statement.
What is a do-while loop?
The do-while loop is very similar to that of the while loop. But the only difference is that this loop checks for the conditions available after we check a statement. Thus, it is an example of a type of Exit Control Loop.
Difference Between while and do-while loop in C, C++, Java
Here is a list of the differences present between while and do-while loop in C, C++, Java.
|Checking of Condition||It first needs to check the condition, and only then can we execute the statement(s).||The execution of statement(s) occurs at least once. After that, the checking of the condition occurs.|
No semicolon is present at the end of the while loop.
A semicolon is present at the end of the do-while loop.
|Requirement of Brackets||We don’t require any brackets if there is only a single statement.||We would always require brackets in this case.|
|Initialization of Variables||We always need to initialize a variable in a condition before the execution of this loop.||The initialization of the variable may occur within or before the execution of the loop.|
|Controlling||The while loop is an entry-controlled type of loop.||The do-while loop is an exit-controlled type of loop.|
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