What is the do-while loop used for in C?
a) To execute code at least once
b) To perform a task based on a condition
c) To declare variables
d) To perform arithmetic operations
Answer:
a) To execute code at least once
Explanation:
The do-while loop in C ensures that the code inside the loop executes at least once before the condition is tested. This loop structure first executes the loop’s body and then checks the condition. If the condition is true, the loop continues; if false, it stops.
The do-while loop is particularly useful when the code block must execute at least once regardless of the condition, such as when prompting a user to enter data at least once.