CSC 351 - Chapter 9

Question 1

Subprogram

Answer 1

• has a single entry point.
• the calling program unit is suspended during execution
• control returns to caller when done

Question 2

Subprogram Definition

Answer 2

• describes the actions of the subprogram abstraction

Question 3

Subprogram Call

Answer 3

• request that a specific subprogram is called

Question 4

Two Fundamental Abstraction Facilities

Answer 4

• process abstraction

- data abstraction

Question 5

Subprogram Header

Answer 5

• first part of the definition including the name, kind of subprogram and parameters

Question 6

Parameter Profile

Answer 6

• number, order and type of parameters

Question 7

Protocol

Answer 7

• parameter profile and return type

Question 8

Subprogram Declaration

Answer 8

• protocol but not the body of the subprogram

Question 9

Formal Parameter

Answer 9

• dummy variable used in the subprogram header

Question 10

Actual Parameter

Answer 10

• value or address used in subprogram call statement

Question 11

Positional Parameter

Answer 11

• binding of actual parameter to formal parameter is bound by position

Question 12

Keyword Parameter

Answer 12

• name of formal parameter is specified with actual parameter

Question 13

Two Categories of Subprograms

Answer 13

• procedures

- functions

Question 14

Local Variables

Answer 14

• defined inside subprogram

- can be static or stack dynamic

Question 15

Parameter Passing

Answer 15

• pass by value
• pass by reference
• pass by name
• pass by result
• pass by value-result

Question 16

Design Considerations for Parameter Passing

Answer 16

• efficiency

- oneway or twoway data transfer

Question 17

Closure

Answer 17

• subprogram and the environment where it was defined

Question 18

Coroutine

Answer 18

• subprogram that has multiple entries and controls them