Why are clear interfaces so important

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Reference no: EM131857436

Problem

1. Subprogram declarations and package declarations each serve to define an interface. Why are clear interfaces so important?

2. When is a definition package useful?

3. Using the definition package Customer_Accounts on page 690.

a. Declare a variable called Name whose type is Name_Rec.

b. Instantiate a package for sequential I/O of components of type Name_Rec.

c. Write a Boolean function that takes two parameters of type Customer_Rec and returns True if the Account_Number of the first parameter is greater than that of the second parameter.

Reference no: EM131857436

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