Which structure is typically used for looping until a condition is met?

The structure that is typically used for looping until a condition is met is a while loop. A while loop repeatedly executes a block of code as long as a specified condition evaluates to true. This allows for dynamic control over how many times the loop runs based on the changing state of the condition.

For example, if you have a counter that increases with each iteration, you can set the while loop to continue running until the counter reaches a particular value. This is particularly useful in scenarios where the number of iterations is not known beforehand and depends on runtime conditions.

While conditional blocks and if-else statements handle decision-making processes by executing different code paths based on conditions, they do not inherently support the repeated execution of code. A function definition establishes a reusable block of code for various tasks but does not dictate looping behavior.