Variables in C++

What is the final value of x in the following code segment?

int x = 7;

x += 2*x;

• 63

• 21

• 81

• This code segment will not compile.

What is the final value of y in the following code segment?

int y = 3 * 7 % 8 + 1 * 4;

• 9

• 24

• 25

• 6

• This code segment will not compile.

What is the final value of x in the following code segment?

double x = 7/2;

• 3 1/2

• 3.5

• 3.0

• This code segment will not compile.

What are the final values of y and z in the following code segment?

int z =4;

int y = 3 + z--;

• y = 7, z = 3

• y = 7, z = 4

• y = 6, z = 3

• y = 6, z = 4

• This code segment will not compile.

What is the final value of y in the following code segment?

double y = 2;

int z = 3;

y /= z + 1;

• y = 1.0

• y = 2.0

• y = 0.5

• y = 0.0

• This code segment will not compile.

What is the final value of w in the following code segment?

int w = int(3 / 2) + 5 % 10 - 3.5;

• -2

• 3

• -3

• 2

• This code segment will not compile.

What is the final value of x in the following code segment?

(Assume the header file <cmath> has been included.)

double x = pow(2, 3) + 1 / 2;

• 9.5

• 8.5

• 8.0

• 9.0

• This code segment will not compile.

What is the final value of x in the following code segment?

(Assume the header file <cmath> has been included.)

double x = 15 / sqrt(4.0) - 10 % 3;

• 6.5

• 6.0

• 0.0

• -0.5

• This code segment will not compile.

What are the final values of x and y in the following code segment?

int x = 3;

int y = ++x * 5 / 2;

• x = 3, y = 10

• x = 4, y =7

• x = 4, y = 10

• x = 3, y = 7

• This code segment will not compile.

What is the final value of y in the following code segment?

int x = 1234;

int y = x % 10 + x / 10 % 10;

• y = 34

• y = 7

• y = 38

• y = 10

• This code will cause an error due to division by zero.