Self Assesment Questions 8

Instructions

For each question choose the single response which best answers the question, or which completes the statement most accurately.

Question 77: What is "function overloading"?

When a single function does more than one job in a program

When a single function has more than one definition in a program

When two or more functions have the same name and parameter types

When two or more functions have the same name but different parameter types

When two or more functions have different names but the same parameter types

Question 78: Why is function overloading useful?

It conserves identifiers

It allows us to give related functions a common (and logical) name

It allows us to pass the same arguments to different functions

It reduces the total number of functions, therefore improving program performance

It increases the total number of functions, therefore improving program flexibility

Question 79: What is the "signature" of a function?

The binary pattern it forms when converted to assembler

A technical term for the unique name of the function

A technical term for the unique combination of the name and parameter types of a function

A technical term for the unique combination of the name, parameter types, and return type of a function

None of the above

Question 80: How does the compiler work out which version of an overloaded function to call?

It calls the first function it finds with the correct name

It calls the "most recently defined" function

It calls the fastest available function with the correct name

It calls the function with the "unique closest" signature

It calls the function with the "unique longest" signature

Question 81: How can a call to an overloaded function be ambiguous?

Its name might be misspelled

There might be two or more functions with the same name

There might be two or more functions with equally appropriate signatures

The function might have the right signature, but be inaccessible

The function might be polymorphic

Last updated: August 8, 2005