Repetition structures, or loops, are used when a program needs to repeatedly process one or more instructions until some condition is met, at which time the loop ends. Many programming tasks are repetitive, having little variation from one item to the next.

What is repetition structure example?

Examples of such repetition include continual checking of user data entries until an acceptable entry, such as a valid password, is made; counting and accumulating running totals; and recurring acceptance of input data and recalculation of output values that only stop upon entry of a designated value.

What is repetition structure in Visual Basic?

A repetition structure allows the programmer to specify that an action be repeated a number of times, depending on the value of a condition. Visual Basic . NET provides seven repetition structures—one of which is the While repetition structure.