C++ Programming Unit 3 Quiz

Suppose that x is an int variable and y is a double variable and the input is: 10 20.7. Choose the values after the following statement executes:

cin >> x >> y;

• x = 10, y = 20

• x = 10, y = 20.0

• x = 10, y = 20.7

• x = 10, y = 21.0

Suppose that x and y are int variables. Which of the following is a valid input statement

• cin >> x >> cin >> y;

• cin >> x >> y;

• cin << x << y;

• cout << x << y;

Suppose that x is an int variable, y is a double variable and ch is a char variable and the input is:

15A 73.2. Choose the values after the following statement executes:

cin >> x >> ch >> y;

• x = 15, ch = 'A', y = 73.2

• x = 15, ch = 'A', y = 73.0

• x = 15, ch = 'a', y = 73.0

• This statement results in an error because there is no space between 15 and A.

Suppose that alpha is an int variable and ch is a char variable and the input is:

17 A

What are the values after the following statements execute?

cin >> alpha;

cin >> ch;

• alpha = 17, ch = ' ‘

• alpha = 1, ch = 7

• alpha = 17, ch = 'A‘

• alpha = 17, ch = 'a‘

Suppose that x is an int variable, y is a double variable, z is an int variable, and the input is:

15 76.3 14

Choose the values after the following statement executes:

cin >> x >> y >> z;

• x = 15, y = 76, z = 14

• x = 15, y = 76, z = 0

• x = 15, y = 76.3, z = 14

• x = 15.0, y = 76.3, z = 14.0

Suppose that ch1, ch2, and ch3 are variables of the type char and the input is:

A B

C

Choose the value of ch3 after the following statement executes:

cin >> ch1 >> ch2 >> ch3;

• 'A'

• 'B'

• 'C'

• '\n'

Suppose that x and y are int variables, z is a double variable, and the input is:

28 32.6 12

Choose the values of x, y, and z after the following statement executes:

cin >> x >> y >> z;

• x = 28, y = 32, z = 0.6

• x = 28, y = 32, z = 12.0

• x = 28, y = 12, z = 32.6

• x = 28, y = 12, z = 0.6

Suppose that x is an int variable, ch is a char variable, and the input is:

276.

Choose the values after the following statement executes:

cin >> ch >> x;

• ch = '2', x = 76

• ch = '276', x = '.‘

• ch = ' ', x = 276

• ch = 'b', x = 76

Suppose that x and y are int variables, ch is a char variable, and the input is:

4 2 A 12

Choose the values of x, y, and ch after the following statement executes:

cin >> x >> ch >> y;

• x = 4, ch = 2, y = 12

• x = 4, ch = A, y = 12

• x = 4, ch = ' ', y = 2

• This statement results in input failure

Suppose that ch1 and ch2 are char variables, alpha is an int variable, and the input is:

A 18

What are the values after the following statement executes?

cin.get(ch1);

cin.get(ch2);

cin >> alpha;

• ch1 = 'A', ch2 = ' ', alpha = 18

• ch1 = 'A', ch2 = '1', alpha = 8

• ch1 = 'A', ch2 = ' ', alpha = 1

• ch1 = 'A', ch2 = '\n', alpha = 1