ANSWERS for COS1511 January examination 2023

Jan/Feb 2023



70 Marks




This paper consists of 8 pages out of 70 marks


INSTRUCTIONS:

1. Answer all the questions on a Word document/by hand and convert to PDF.
2. Number your answers and label your rough work clearly.
4. Marks are awarded for part of an answer, so do whatever you are able to in each question.




ALL THE BEST




[TURN OVER]

, 2

Choose the correct option and write only the number

Question 1 [20]
1.What is the output of the following code fragment? (2)

int x = 0;
while( x < 8)
cout << x << " ";
x ++;
cout << x << endl;

1. 0
2. infinite loop
3. 1 2 3 4 5 6 7 8
4. 0 1 2 3 4 5 6 7 8

2.What is the value of x after the following statements? (2)

int x, y, z; y = 10;
z = 3;
x = y * z - 3;

1. 0
2. 3
3. 10
4. 27

3.What is the value of x after the following statements? (2)

int x;
x = x + 15;

1. 0
2. 14
3. 15
4. not defined

4.What is the output of the following code? (2)

cout << "Where is the \\" << endl;

1. Where is the \
2.Where is the
3.Nothing, it is a syntax error
4.Where is the \ endl

5.What is the value of xafter the following statements? (2)

int x;
x = 19 % 5;

1. 4.0
2. 4
3. 3.8
4. 8

6.Given the following code fragment and the input value of 5, what output is generated? (2)
[TURN OVER]
float tax; float total;

cout << "Enter the cost of the item\n"; cin >> total;