Question

1. A(n) ____________________ is a variable or expression listed in a call to a function.

2. The pass by ____________________ mechanism must be used if the calling code is to receive information back from the function.

3. True or False? If there are several items in a parameter list, the compiler matches the parameters and arguments by their relative positions in the parameter and argument lists.

4. True or False? In C++, a function definition may have another function definition nested within it.

5. If an ampersand (&) is not attached to the data type of a parameter, then the corresponding argument can be:

a. a constant

b. a variable name

c. an arbitrary expression

d. a and b above

e. a, b, and c above

6. Given the function prototype void Fix( int&, float ); which of the following is an appropriate function call? (someInt is of type int, and someFloat is of type float.)

a. Fix(24, 6.85);

b. someFloat = 0.3 * Fix(someInt, 6.85);

c. Fix(someInt + 5, someFloat);

d. a and c above

e. none of the above

7. For the function definition

void Func( int gamma )
{
cout << 3 * gamma;
}
which of the following comments describes the direction of data flow for gamma?

a. /* in */

b. /* out */

c. /* inout */

8. When arguments are passed between the calling code and the called function, parameters and their corresponding arguments are matched by:

a. their data types

b. their relative positions in the parameter and argument lists

c. their names

d. whether they are inputs to or outputs from the function

9. True or False? The use of reference parameters helps to avoid unintentional changes to arguments.

10. Given the function heading

void GetNums( int howMany,
float& alpha,
float& beta )
which of the following is a valid function prototype for GetNums?

a. void GetNums( int howMany, float& alpha, float& beta );

b. void GetNums( int, float&, float& );

c. int GetNums( int, float&, float& );

d. a and b above

e. a, b, and c above

Answer 1

Answer 1: argument
Answer 2: pass by value
Answer 3: true
Answer 4: false, we can't have
Answer 5: a and b and c
Answer 6:None of the above, we can't pass constant to reference parameter
Answer 7: b
as we are printing

Answer 8: b. their relative positions in the parameter and argument lists

Answer 9: false, const will help
Answer 10:a and b

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