COSC 1436 Ch. 6

If the formal parameter list of a function is empty, the parentheses after the function name are not needed. (T/F)

False

The execution of a return statement in a user-defined function terminates the program. (T/F)

False

The following return statement returns the value 10. return 10, 16; (T/F)

False

The function main is always compiled first, regardless of where in the program the function main is placed. (T/F)

False

Which of the following statement about function prototypes and function headers is true?

Function prototypes end with a semicolon, but function headers do not.

The output of the statement: ​ cout << tolower('$') << endl; ​ is ____.

'$'

Given the following function: int strange(int x, int y){if (x > y)return x + y;elsereturn x - y; } what is the output of the following statement?cout << strange(4, 5) << endl;

-1

The statement: return 8, 10; returns the value ____.

10

The output of the statement: cout << pow(3.0, 2.0) + 5 << endl; is ____.

14.0

The statement: return 2 * 3 + 1, 1 + 5; returns the value ____

6

The statement: return 37, y, 2 * 3; returns the value ____

6

What value is returned by the following return statement? int x = 5;return x + 1;

6

Given the following function: int next(int x){return (x + 1);}what is the output of the following statement?cout << next(next(5)) << endl;

7

The output of the statement: ​ cout << pow(2.0, pow(3.0, 1.0)) << endl; ​ is ____.

8.0

Assume the following. static_cast<int>('a') = 97 static_cast<int>('A') = 65 ​ The output of the statement: ​ cout << static_cast<int>(tolower('B')) << endl; is ____.

98

To use the predefined function tolower, the program must include the header file ____.

<cctype>

The standard header file for the abs(x)function is ____.

<cmath>

Given the function prototype: ​ float test(int, int, int); ​ which of the following statements is legal?

cout << test(7, 14, 23);

Given the function prototype: ​ double testAlpha(int u, char v, double t); ​ which of the following statements is legal?

cout << testAlpha(5, 'A', 2);

Given the following function prototype: ​ double tryMe(double, double); ​ which of the following statements is valid? Assume that all variables are properly declared.

cout << tryMe(2.0, 3.0);

A variable listed in a function header is known as a(n) ____ parameter.

formal

The heading of a function is also called a ____.

function header

Which of the following function prototypes is valid?

int funcTest(int, int, float);

Given the following function prototype: ​ int test(float, char); ​ which of the following statements is valid?

int u = test(5.0, '*');

When you attach & after the dataType in the formal parameter list of a function, the variable following that dataType becomes a(n) ____________________ parameter.

reference

The ____________________ of a function consists of the function name and its formal parameter list.

signature

A function ____________________ is a function that is not fully coded.

stub

Functions that do not have a return type are called ____ functions.

void

If a function needs to return more than one value, as a rule of good programming style, you should change it to a(n) ____________________ function and use the appropriate reference parameters to return the values.

void

____________________ parameters are useful in three situations: When the value of the actual parameter needs to be changed • When you want to return more than one value from a function • When passing the address would save memory space and time relative to copying a large amount of data

Reference

Assume that all variables are properly declared. The following statement in a value-returning function is legal. if (x % 2 == 0)return x;elsereturn x + 1; (T/F)

True

In C++, a function prototype is the function heading without the body of the function. (T/F)

True

Once you write and properly debug a function, you can use it in the program (or different programs) again and again without having to rewrite the same code repeatedly. (T/F)

True

The data type of a variable in a return statement must match the function type. (T/F)

True

The following function heading in a C++ program is valid: int funcExp(int u, char v, float g) (T/F)

True

Using functions greatly enhances a program's readability because it reduces the complexity of the function main. (T/F)

True

A function prototype is ____.

a declaration, but not a definition

A variable or expression listed in a call to a function is called a(n) ____.

actual parameter