C++ Answers

Show that n = O(nlogn).

Declare a double array of length 13 dArray.

• Input the values of dArray from user.

• Display the values of even indexes using pointer arithmetic only.

Declare an array ‘list’ of length 15.

• Input the values from user.

• Pass that array to a function sorting.

• Your function should only accept a pointer as an argument.

• Sort the values of the array in ascending order using any of the sorting techniques.

Write a function to calculate the Cube × Cube of a number C. Your function should take an

integer pointer to C. Display the original value of C and its Cube × Cube cube in the main

function.

QUESTION 7

(20 marks)

A savings and loan association has decided to undertake the development of an in-house computer system to 

replace the processing it currently purchases from a time-sharing bureau. The internal auditors have suggested 

that the system development process be planned in accordance with the Systems Development Life Cycle. The 

following items have been identified as major systems development activities that will have to be undertaken

I.System test

II.Initial investigation

III.Install hardware and software

IV.Implementation planning 

V.Conversion

VI.System survey

VII.Technical specifications

VIII.Systems modification 

IX.User procedures and training

X.Programming

Required:

a)Arrange the above ten items in the sequence in which they should logically occur. (10 marks)

b)Discuss the conceptual systems design process in the SDLC and the activities in this phase. 

(10 marks)

QUESTION 6 (20 marks)

(a) During which of the five SDLC stages is each task, labeled (a) through (m), performed? More than one 

answer may apply for each activity. (12 marks)

(i)

Writing operating procedures manuals 

(ii) Developing program and process controls 

(iii) Writing programs

(iv) Identifying alternative systems designs 

(v) Identifying external and administrative controls 

(vi) Testing the system 

(vii) Training personnel 

(viii) Changing of old system to new system

(ix) Evaluating the existing system 

(x) Analyzing the achievement of systems benefits 

(xi) Modifying and altering programs

(xii) Conducting a feasibility analysis

a) List and describe at least four different Internet business models. Which of these models do you think is 

the most risky for a dot-com business? Support your answer. (10 marks)

(b) List and describe two ways in which the individual consumer may pay for purchases on the Internet. (4 

marks)

(c) Describe four types of applications that are especially well-suited for m-commerce. (6 marks)

Create a programm that will determine there correct vaccine for every candidate. Use the switch statement and the for loop to determine the right vaccine for individuals by using their temperature readings

-30-33 for Mordena

-34-36 mRNA

-37-38 Johnson and Johnson’s Janssen

-39-40 Pfizer-BioNTech

The program must be able to read temperatures up to four(4) decimal places after the comma & convert it to two(2) decimals. A summary of all the people that are vaccinated along with their associated vaccines must be listed in the output in a table form as follows:

Name and surname Temperature Vaccine

Mzamani Nkuna 34,37 mRNA

Themba Manana 37,66 Johnson and johnson’s Janssen

Charles Nkosi 32,55 Mordena

Norwell Mbewe 39,78 pFizer-BioNTech

Take note of the following :

1. Use an appropriate operator to convert an expression to a specified type.

2. Use an appropriate operator to set correct precision for decimals

3. Use an appropriate operator to manage the alignments in the summary of your candidates

Sort all the stacks in this order:

Stack1 in alphabetic order by name

Stack2 in alphabetic order by Surname

Stack3 in Numeric order (descending) by marks obtained

You have an ordered linked list with 5 object of type person in it.

Explain with an example of how to add and delete a person in an ordered linked list. Your list should remain ordered after the insertion and after the deletion of the item.

Note: a Person in this case should be an object that has a name, surname, age and gende