Loops in C++

What is a while loop used for in C++?

A general-purpose loop that repeats as long as a condition is true.

When does a while loop check its condition?

Before each iteration (pre-test loop).

What is a do-while loop in C++?

A loop that executes its body at least once before testing the condition.

Why is a do-while loop good for repeating a process?

Because the loop body always executes once before checking the condition, making it ideal for menu-driven or user-input programs.

What is the general structure of a for loop?

for (initialization; test; update) — initialization runs once, the test is checked each iteration, and the update runs after each loop body execution.

When is a for loop most useful?

When the number of iterations is known or easily controlled.

When is a while loop most useful?

When the number of iterations is unknown and depends on a condition.

When is a do-while loop most useful?

When you need the loop body to run at least once before checking the condition.