Respuesta :
The option 'a' is correct. It is true in a counter-controlled while loop, the loop control variable must be initialised before the loop.
An action is repeated a certain number of times in a while loop. Before the loop begins, a counter variable is created and initialised with a value. Whether the counter has reached a specific value is the condition that is checked before each iteration of the loop.
A language's provision of a looping construct enables a set of statements to be run repeatedly.
Uncontrolled loops (those that do not terminate) and controlled loops (those that do) are the two main types of loops.
One or more repetition conditions are present in a controlled loop, which eventually forces the looping construct to end. A test for logical expressions is contained within a controlled loop. The looping construct must include this "test" for exit in the proper location. The two types of controlled loops are count-controlled and event-controlled.
Count-controlled loops employ a counter (also known as a loop index) that counts particular items or values and causes the loop to come to an end after a predetermined number of increments or decrements.
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