Do-while loop execution model in C Sharp (C#) - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a do-while loop in C#?

A do-while loop is a control flow statement that executes a block of code at least once and then repeats the loop as long as a specified condition is true.

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How does the execution order of a do-while loop differ from a while loop?

In a do-while loop, the code block runs first, then the condition is checked. In a while loop, the condition is checked first before running the code block.

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What happens if the condition in a do-while loop is false on the first check?

The code inside the do-while loop still runs once before the condition is checked and the loop stops if the condition is false.

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Write the basic syntax of a do-while loop in C#.

do { // code to execute } while (condition);

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Why might you choose a do-while loop over a while loop?

You choose a do-while loop when you want the code inside the loop to run at least once, regardless of the condition.

What is guaranteed when using a do-while loop?

A The loop body executes at least once

B The loop body may never execute

C The condition is checked before the first execution

D The loop runs exactly once

A do-while loop always runs the code block once before checking the condition.

Where is the condition checked in a do-while loop?

A At the start of the program

B Before the loop body

C After the loop body

D Only once at the end of the program

The condition is checked after the loop body executes in a do-while loop.

Which of these is the correct syntax for a do-while loop in C#?

A do { /* code */ } while (condition);

B while (condition) { /* code */ }

C do (condition) { /* code */ }

D while { /* code */ } do (condition);

Option A shows the correct do-while loop syntax.

If the condition is false initially, how many times does the do-while loop run?

A Infinite times

B Zero times

C Twice

D Once

The do-while loop runs once before checking the condition.

Which scenario is best suited for a do-while loop?

A When you want to run code only if a condition is true

B When you want to run code at least once regardless of condition

C When you want to run code zero or more times

D When you want to run code exactly twice

Do-while loops ensure the code runs at least once, regardless of the condition.

Explain how a do-while loop works and how it differs from a while loop.

Think about when the condition is checked in each loop.

Describe a real-life situation where a do-while loop would be useful.

Imagine you want to show a menu and ask for input at least once.