CS4: Assignment On Programming

Answer All Questions in Section A and One from Section B

1. (a) i)         Define the term a bug as used in programming.                    (01mark)

ii) Differentiate between source code and an object code. (02marks)

(b)      i)           Identify three high level programming languages.        (03marks)   

ii) Give four advantages of low level programming languages.    (04marks)

2.    (a) State two categories of programming language translators             (02 marks)

(b)       Give two ways how interpreted program is different from compiled program.                                                                                                                                              (02 marks)

(c)    Re-arrange the following programming stages in their ascending order.

Coding & code review/documentation/Planning/analysis and design  (04 marks)

• Using a Flowchart, design a program that can output a phrase “I Love My School”.                                                                                                                 (02 marks)

 3. (a)       Define the term    translator                                                 (01mark)

(b)   Suggest two characteristics of a good programming language.       (02marks)

(c) Write down three language processors.                                                  (03marks)

(d)   Give one example of;

i) High level programming language.             (01mark

1. ii) Low level of programming language.                                     (01mark)

(e)       Give two advantages of High level programming language over low level

programming languages.                                                               (02marks)

4.(a) Demonstrate any three methods of error detection in a program code. (03 marks)

(b) Give three considerations of developing a computer program                 (03 marks)

(c) Define the following terms in relation to computer programming:

(i).         Code.                                                                                                 (01 mark)

(ii).        Alpha Test                                                                                        (01 mark)

(iii) Variable                                                                                                   (01 mark)

(iv) Encapsulation                                                                                         (01 mark)

6.(a) Give three reasons why a flowchart would be used instead of a pseudocode to solve a (03 marks)

(b). Differentiate between a Keyword and a syntax.                                      (02 marks)

• Explain the function of each of the following programming concepts
• Termination (01 marks)
• Variable declaration             (01 marks)

7. State the uses of a compiler to a programmer             (03 marks)

8.(a) During program testing there are 5 main types of errors that can be encountered, identify at least three of these errors.                                                 (03 marks)

(b) Kato was assigned a task by the computer teacher to develop a program that computes the radius of a circle whose area is to be entered by the user using either C or VB language. Assist Kato to write a working program code according to the task assigned to him by the teacher.                                           (04 marks)

(c) Write a pseudocode for a program that can be used to classify people according to age. If a person is more than 20 years; output “Adult” else output “Young person”.                                                        (03 marks)

SECTION C (20 MARKS)

Answer only one question from this section. 

9. (a) Differentiate between coding and debugging in relation to computer programming.              (02 marks)

(b) Explain the various characteristics of a good software.                         (06 marks)

(c) Identify Six (6) major steps taken when designing a program.              (06 marks)

(d) Draw a flowchart for a program that would be used to classify animals according to sex.  If a letter M is input, the program should display ‘Male’ otherwise it should display “Female”.                          (06 Marks)

10. The Harrisburg City Manager wants an application that determines voter eligibility and displays one of three messages. The messages and criteria for displaying each messages are as follows;

The manager has assigned you to develop a working application for this company, in your preparations develop a pseudocode, a flow chart and finally choose from VB or C languages to write a code that will be used for this application.  (20 Marks)

11. (a) Explain the six standard set of symbols used to draw program flowcharts as created by American National Standard Institute (ANSI).                         (08 Marks)

(b) With aid of a pseudocode and a flowchart, design an algorithm that: Prompt the user to enter two numbers X and Y, Divide X by Y.  However, if the value of Y is 0, the program should display an error message “Error: Division By Zero”. Use C or VB language, write its program code.                                            (12 marks)