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21. which best describes the precondition of a method? it is an assertion that a. describe precisely the conditions that must be true at the time the method is called. b. initializes the parameters of the method. c. describes the effect of the method on its postcondition. d. explains what the method does. e. states what the initial values of local variables in the method must be.

Answer :

The assumption that the parameters have values and are not null is an example of a precondition, which is a condition that must be true for your method code to function.

Although the approaches could do so, they are not required to. The precondition is what the procedure anticipates to function correctly. Making sure the precondition is true is the responsibility of the programmer calling the function. However, conscientious programmers also adhere to the following guidelines: Every effort should be made to identify precondition violations while writing a function. A predicate that must be true before entering a function is known as a precondition. It conveys how a function expects its arguments and/or object states to be.

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