Which loop executes its block of code at least once regardless of the condition?

Which loop executes its block of code at least once regardless of the condition?

• A. For Loop
• B. While Loop
• C. Do-While Loop
• D. Infinite Loop

Answer: (C)

The Do-While Loop is designed specifically to execute its block of code at least once, regardless of the condition. This is due to its structure, which first runs the code inside the loop and then checks the condition afterwards. As a result, even if the condition evaluates to false from the beginning, the code will still execute for the initial iteration. This characteristic makes the Do-While Loop particularly useful in scenarios where you want to ensure that the code executes at least once, such as when prompting user input or performing an action that must occur before the condition is checked. In contrast, the For Loop and While Loop check their conditions before executing the code block, which means if the condition is not met initially, the loop might not execute at all. An Infinite Loop simply continues endlessly without a terminating condition, but it does not guarantee execution of a block of code at least once in the same way that a Do-While Loop does.

The Do-While Loop is designed specifically to execute its block of code at least once, regardless of the condition. This is due to its structure, which first runs the code inside the loop and then checks the condition afterwards. As a result, even if the condition evaluates to false from the beginning, the code will still execute for the initial iteration. This characteristic makes the Do-While Loop particularly useful in scenarios where you want to ensure that the code executes at least once, such as when prompting user input or performing an action that must occur before the condition is checked.

In contrast, the For Loop and While Loop check their conditions before executing the code block, which means if the condition is not met initially, the loop might not execute at all. An Infinite Loop simply continues endlessly without a terminating condition, but it does not guarantee execution of a block of code at least once in the same way that a Do-While Loop does.