IT104 - Week 4 pg. 111

IT104 - Week 4 pg. 111 - IT104 Homework 4 Short Answer 1...

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IT104 07/19/2014 Homework 4 Short Answer 1. How do modules help you to reuse code in a program? Answer: It reduces the duplication of code within a program by reusing the module that was written once. 2. Name and describe the two parts that a module definition has in most languages. Answer: The two parts module definition has two parts, the header which indicates the starting point of modules, and the body; a list of statements that belong to the modules. 3. When a module is executing what happens when the end of the module is reached? It’s executed and returned back to the point in main program where it was sidetracked from. 4. What is a local variable? What statements are able to access a local variable? Answer: It’s a variable that is declared inside a module. A local variable belongs to the module in which it is declared and only statements inside that module can access the variable. An error will occur if statements in one module try to access a local variable that belong to another module. 5. In most languages, where does a local variable’s scope begin and end? Answer: Begins at the variables declaration within a module and ends at the end of the module in which the variable is declared.
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  • Fall '14
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