What are the differences between a do-while loop and a while loop?

Question

Accepted Answer

The do while loop executes the code block once before checking the condition, while the while loop checks the condition before executing the code block.

do while loop is useful when you want to execute the code block at least once, regardless of the condition.
while loop is used when you want to execute the code block only if the condition is true.
Example: do { // code block } while (condition);
Example: while (condition) { // code block }

Accepted Answer

The difference between while and do while is while loop checks the condition first then executes the block of code and do while loop checks the condition after the program executes once

So, while loop is entry control loop structure

Do while loop is exit control loop structure

Asked in TCS and 10 others

What are the differences between a do-while loop and a while loop?

Interview Questions from Popular Companies