Preparation for Final Exam MCQ Quiz BIG - Попытка 1

1 2 3 4 5 6 7

Страница: (Назад) 1 2 3 4 5 6 7 8 9 10 (Далее)

Question21

Баллов: 1

What gets printed for the value of z?

#include <iostream>

struct Foo
{
Foo(int n): x(n++), y(n++), z(n++) {}
int x;
int y;
int z;
};

int main(int argc, char** argv)
{
Foo f(3);

std::cout << "x: " << f.x << std::endl;
std::cout << "y: " << f.y << std::endl;
std::cout << "z: " << f.z << std::endl;

return 0;
}

Выберите один ответ.

	a. code is ill-formed
	b. 4
	c. 5
	d. 3

Question22

Баллов: 1

Find the error(s) in the following and correct it (them).
The following is a partial definition of class Time:

class Time{
public:
// function prototypes

private:
int hour = 0;
int minute = 0;
int second = 0;
}; // end class Time

Выберите один ответ.

	a. class Time { public: // function prototypes private: hour = 0; minute = 0; second = 0; }; // end class Time
	b. class Time{ public: // function prototypes Time (int my_hour, int my_minute, int my_second) { hour=my_hour; minute=my_minute; second=my_second; } private: int hour; int minute; int second; }; // end class Time
	c. no errors

Question23

Баллов: 1

All programs can be written in terms of three types of control structures:

Sequence, selection and repetition.

Question24

Баллов: 1

Find the error(s) in the following code segment. The following code should print the values 1 to 10:

n = 1;
while (n < 10)

cout << n++ << endl;

Выберите один ответ.

	a. n = 1; while (n <=11) cout << n++ << endl;
	b. n = 1; while (n < 11) cout << n++ << endl;
	c. n = 1; while (n <= 10) cout << ++n << endl;

Question25

Баллов: 1

All arguments to function calls in C++ are passed by value

Ответ:

True+False

Question26

Баллов: 1

What is the output of the program?

#include<iostream>

usingnamespace std;

int main() {

int a = 1;

do {

a+=1;

cout << a;

} while (a<5);

return 0;

}

Выберите один ответ.

	a. 1234
	b. 23456
	c. 2345
	d. 12345
	e. 123456

Question27

Баллов: 1

Predecrement the variable x by 1, then subtract it from the variable total

Выберите один ответ.

	a. total = --x;
	b. total -= x--;
	c. total -= ++x;
+	d. total -= --x;
	e. total -= x++-;

Question28

Баллов: 1

A function that calls itself either directly or indirectly (i.e., through another function) is a (n) ________ function

Выберите один ответ.

+	a. recursive
	b. special
	c. not sure
	d. repetition
	e. loop

Question29

Баллов: 1

Find the error(s) in the following and correct it (them).
Assume the following prototype is declared in class Employee:
int Employee(const char *, const char *);

Выберите один ответ.

	a. int Employee(const char , const char );
+	b. Employee(const char , const char );
	c. Employee(const char, const char);

Question30

Баллов: 1

Find the error in the following program segment. Assume the following declarations and statements:
int *zPtr; // zPtr will reference array z
int *aPtr = 0;
void *sPtr = 0;
int number;
int z[ 5 ] = { 1, 2, 3, 4, 5 };

// assign the value pointed to by sPtr to number
number = *sPtr;

Выберите один ответ.