Which loop is used when you know how many times you want to iterate?

The for loop is specifically designed for situations where you know in advance how many iterations you need to perform. It allows for concise initialization, condition-checking, and incrementing all within a single line of code. This makes it particularly useful for tasks that involve a fixed number of iterations, such as iterating over arrays or performing a set number of calculations.

The other loop types serve different purposes. A while loop continues to execute as long as a specified condition remains true, which means the number of iterations is not predetermined. An infinite loop is a loop that lacks a terminating condition, leading it to run indefinitely, and is typically not suitable if a specific number of iterations is required. Lastly, a do-while loop runs at least once and then continues based on a condition, meaning it also doesn't always guarantee a predetermined number of iterations from the outset. Thus, the characteristics and structure of a for loop make it the preferred choice for cases where the iteration count is known in advance.