What characterizes the execution of a do..while loop?

The execution of a do..while loop is characterized by the fact that the code block within the loop is executed before evaluating the boolean expression that determines whether the loop continues. This means that the statements inside the do block are guaranteed to run at least once, regardless of whether the condition is true or false.

This behavior is distinct from other types of loops, such as while loops or for loops, where the condition is checked before the execution of the loop body. The do..while construct allows for situations where an operation must occur at least once, which is particularly useful in scenarios where some initialization needs to happen before any condition is evaluated.

In summary, the defining feature of a do..while loop is that it ensures the loop body executes initially without any prior condition checks, leading to its characteristic of always executing at least once before evaluating the terminating condition.