10. _______What is the value of the variable z after the following lines of code

Question

10. _______What is the value of the variable z after the following lines of code are executed?

int z = 5;

z = z * 3;

z = z + 1

A. 2

B. 16

C. 4

D. 15

E. either it’s undefined, or an error would be generated

11. _______An example of a logic error is

A. forgetting to initialize a variable

B. a calculation error leading to the wrong answer

C. a misspelled keyword (C++ command)

D. a variable with a confusing name

E. no comments in the program

12. _______What does the following program output?

const double PI = 3.14159;

PI *= 2;

cout << PI;

A. 3.14159

B. 6.28318

C. 2

D. 2.0

E. It generates a compiler error because a named constant such as PI cannot be modified.

Explanation / Answer

10.   B. 16
11.   B. a calculation error leading to the wrong answer
12. E. It generates a compiler error because a named constant such as PI cannot be modified.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.