1. Students create some code that are examples of the use of
SET 5D (Davis Textbook) 1. What is generally considered to be the most common and best way to pass variables between modules? (A) The use of parameters. (B) The use of sharing variables. (C) The use of function calls. (D) The use of procedure calls. 2. Variables that are available to all other modules within the software project are referred to as: (A) actual parameters. (B) global parameters. (C) function variables. (D) global variables. 3. What is the name given to a subroutine when its identifier has a data type and a value of this type is returned to the calling subroutine? (A) A procedure. (B) A function. (C) A call. (D) A variable. 4. With regards to variables, what is meant by the term ‘Scope’? (A) The extent or range of operation. (B) A call that specifies the routine to be executed. (C) Where in a program, a given identifier may be accessed. (D) Both A and C. 5. When developing code for reuse, it is important to develop generic code because: (A) It will then be suitable for inclusion in a library of code. (B) It will have been thoroughly tested at time of creation and therefore should only need minimal, if any modification for use in a new project. (C) Programming time is saved. (D) All of the above. 6. To invoke a subroutine in a programming language is known by what term? (A) Process. (B) Parse. (C) Pass. (D) Call. 7. A subroutine can either be a: (A) procedure or function. (B) procedure or parameter. (C) function or variable. (D) parameter or variable. 8. Routines suitable for inclusion in a library of code should: (A) use global variables. (B) use parameters. (C) call other modules. (D) always be compiled. 9. What is normally used to communicate data to subroutines? (A) Local variables. (B) Global variables. (C) All variables. (D) Parameters. 10. Which of the following statements is correct? (A) A global variable is available to other subroutines and is destroyed only when the program ends. (B) A global variable is available to other subroutines and is created and destroyed each time a subroutine calls it. (C) A global variable is available only to a single subroutine but is destroyed only when the program ends. (D) A global variable is available to other subroutines and is never destroyed to ensure its availability. 11. Dynamic Link Libraries, Active X controls and the Windows API are all compiled modules of code. What advantages and disadvantages does this have for software developers? 12. How can altering the scope of a variable, be used to allow other modules access to required data items. Discuss. 13. Procedures and functions are different types of subroutines. What is the difference between the two in terms of how they are called by higher-level routines? Discuss. |
11 SDD > 8.2 Introduction to Software Development > 8.2.2 Implementing software solutions > 3. Commonly executed sections of code - libraries and subroutines >
