Differences between a while loop and a do-while loop?

1. In a while loop, the condition is checked before the loop body is executed. If the condition is false initially, the loop body will not be executed at all. In a do-while loop, the condition is checked after the loop body is executed, so the loop body will always be executed at least once.

2. In a while loop, the loop body may not be executed at all if the condition is false initially. In a do-while loop, the loop body will always be executed at least once before the condition is checked.

3. In a while loop, the loop body may not be executed if the condition is false initially. In a do-while loop, the loop body will always be executed at least once before the condition is checked.

4. In a while loop, the loop body may not be executed if the condition is false initially. In a do-while loop, the loop body will always be executed at least once before the condition is checked.

5. In a while loop, the loop body may not be executed if the condition is false initially. In a do-while loop, the loop body will always be executed at least once before the condition is checked.

While Loop

- Condition Check: The condition is checked at the beginning of the loop.
- Execution: Only executes the loop body if the condition is true.
- Usage: Suitable when you want to execute the loop body only if a certain condition is met.

Do-While Loop

- Condition Check: The condition is checked at the end of the loop.
- Execution: Always executes the loop body at least once, even if the condition is false.
- Usage: Suitable when you want to execute the loop body at least once, regardless of the initial condition.

Key Differences

| Feature | While Loop | Do-While Loop |
|---|---|---|
| Condition Check | Beginning of loop | End of loop |
| Body Execution | Only if condition is true | Always executed at least once |
| Use Case | Conditional loop execution | Ensuring loop body execution at least once |