In C++ Programming: HW Questions

int count (int num )

{

int result = 0;

while (num > 1)

{

result += num;

--num;

}

return result;

}

count (1);

What is the return value of the following function call?

Given the following code,

string text(string input) { return input;

input = "Goodbye"; } What is the output of the following statements?

string stuff = "Hello";

cout << stuff << endl;

cout << text(stuff) << endl;

cout << stuff << endl;

Given the function prototype: double testAlpha(int u, char v, double t); which of the following statements is legal? cout << testAlpha(5, 'A', 2); cout << testAlpha( int 5, char 'A', int 2); cout << testAlpha('5.0', 'A', '2.0'); cout << testAlpha(5.0, "65", 2.0);

const int MAX = 100;

string validator( bool valid) { return valid ? "yes" : "no"; } What is the return value of the following function call?

validator(30 <= MAX / 2);

Given the following function:

int strange(int num1, int num2) { if (num1 > num2) return num1 + num2; else return num1 num2; }

what is the output of the following statement?

cout << strange(4, 5) << endl;

Which statement below about prototypes and headers is true? Parameter names must be listed in the prototype, but not necessarily in the header. Prototypes end with a semicolon, but headers do not. Headers should come before prototypes. Headers end with a semicolon, but prototypes do not.

The output of the statement:

cout << pow(2.0, pow(3.0, 1.0)) << endl;

is ____. 6.0 7.0 8.0 9.0

Given the following code,

int foo(char letter) { switch(letter) { case 'a': case 'b': case 'c': return letter - 'a'; }

return 4; } What is the value of val of the following function call?

char test = 'c' - 1; int val = foo(test); 'a'

'b'

0

1

2

3

4

'b' - 'a'

Given the following code,

int count (int num ) { int result = 0;

while (num > 1) { result += num; --num; }

return result; } What is the return value of the following function call?

int test = 3; count (test );

The following function heading in a C++ program is valid:

int funcExp(int u, char v, double g)

True

False

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. True

False

If the formal parameter list of a function is empty, the parentheses after the function name are not needed. True

False

The execution of a return statement in any user-defined function terminates the entire program.

True

False