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CS 010: Introduction to Computer Science I

Quiz 3: 10 minutes

1. What is the output of the following code?

int a = 28;

int b = 19;

int c = 3;

int d = 2;

cout << a % b % c / d;

1. 1.5
2. 1
3. 0.25
4. 0
5. None of the above

2. What is the output of the following code?

int a = 9;

int b = 6;

double c = 2.2;

cout << 4.4 + c * (a / b);

1. 7.7
2. 6.6
3. 9.9
4. 11
5. None of the above

3. What is the output of the following code?

string fun = “I love C++”;

cout << fun.length();

1. 1
2. 9
3. 10
4. 8
5. None of the above

4. Given that str = “Snoozing under a tree”, what would be the result of the following statement

cout << str.substr(1, 1) + str.substr(9, 2);

1. Sun
2. nun
3. nnd
4. S u
5. None of the above

5. What does the following output produce? (Note: a dash is representing a space.)

double x = 1.0;

double y = 777.777;

cout << fixed << setprecision(2) << setw(8);

cout << x << “\n”;

cout << y << “\n”;

a. ----1.00

777.78

b. -------1

777.78

c. ----1.00

--777.78

d. ----1.00

777.777

e. None of the above

6. The Point type is built into the C++ language.
1. TRUE
2. FALSE

7. What is the value of c.get_center and c.get_radius after the following code?

Circle c(Point(-1, 2), 4);

c.move(3, 2);

1. (-4, 4) and 4
2. (4, 0) and 2
3. (2, 0) and 4
4. (2, 4) and 4
5. None of the above

8. The following code has what kind of error?

Time morning(7, 0, 0);

cout << Time.get_hours();

1. logic
2. syntax
3. run-time
4. operational
5. No errors

9. The following code has an error on which line?

Line 1 Point p(0,0);

Line 2 Point q(3,3);

Line 3 Line stick(p, q);

Line 4 cwin << get_start();

1. Line 1
2. Line 2
3. Line 3
4. Line 4
5. No errors
9. What type of character does the following code display?

Point p(2,4);

Line s(p, Point(4, 4);

cwin << s;

p.move(0,2);

Point q = p;

q.move(0, -4);

cwin << Line(p, q);

p.move(2, 0);

q.move(2, 0);

cwin << Line(p, q);

a. U

b. T

c. H

d. E

e. None of the above