Calculator Application and Arrays in VB.NET

This report explores the creation of a calculator application using VB.NET and Visual Studio IDE. The report details the implementation of various calculator operations, including addition, subtraction, multiplication, division, clear, and backspace functionalities. It also provides a comprehensive explanation of arrays in VB.NET, covering one-dimensional and two-dimensional arrays, their declaration, and initialization. The report includes illustrative examples and screenshots to enhance understanding.

Student ID Number
(Do not include student
name as anonymous
marking is implemented)
Programme Title
Calculator
Module Title Foundations in Programming
Module Code (listed on
Moodle and in LTAFP)
QAC020B021S
Module Convenor
Coursework Title Assignment 1
Academic Declaration:
Students are reminded that the electronic copy of their essay may be checked, at
any point during their degree, with Turnitin or other plagiarism detection software
for plagiarised material.
Word Count 600 Date
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Contents
Introduction........................................................................................................................3
Question 1......................................................................................................................4
Question 2....................................................................................................................24
Conclusion.......................................................................................................................25
References.......................................................................................................................26
Appendix:.........................................................................................................................27
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Table of Figures:
Figure 1 Flow Chart...........................................................................................................5
Figure 2 Code for thecalculator application.......................................................................8
Figure 3 Program Output...................................................................................................8
Figure 4 Insert operand1 for addition................................................................................9
Figure 5 Insert operand2 for addition..............................................................................10
Figure 6 Result of addition...............................................................................................10
Figure 7 Insert operand1 for subtraction.........................................................................11
Figure 8 Insert operand2 for subtraction.........................................................................12
Figure 9 Result of subtraction..........................................................................................12
Figure 10 Insert operand1 for multiplication....................................................................13
Figure 11 Insert operand2 for multiplication....................................................................14
Figure 12 Result of multiplication....................................................................................14
Figure 13 Insert operand1 for division.............................................................................15
Figure 14 Error message displayed.................................................................................16
Figure 15 insert operand2 for division.............................................................................16
Figure 16 Division result..................................................................................................17
Figure 17 Clear operation................................................................................................17
Figure 18 calculator reset after clear operation...............................................................18
Figure 19 Before pressing backspace.............................................................................19
Figure 20 After pressing backspace................................................................................19
Figure 21 first operand.....................................................................................................20
Figure 22 Second Operand.............................................................................................21
Figure 23 Result of addition.............................................................................................21
Figure 24 multiply by 2.....................................................................................................22
Figure 25 result of multiplication......................................................................................23
Figure 26 Divide by 4.......................................................................................................23
Figure 27 Subtract by 3...................................................................................................24
Figure 28 Final result of mix operation............................................................................24
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Introduction
This assignment is based on VB.NET. There are two questions in this assignment. The
first question is based on creating a web application of calculator. The application is
generated in programming language VB.NET using visual studio IDE. In second
question the discussion will be made on arrays. In VB.NET how arrays and
multidimensional arrays are created. The report briefly discussed the practical
implementation of calculator application.
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Question 1
Create a project called Calculator. It should contain a form with fields similar to:
Flow Chart:
The flowchart for creating a window application of calculator in VB.NET is shown here: -
Figure 1 Flow Chart
The code of window application calculator is shown here(Dreamincode, n.d.).: -
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Figure 2 Code for thecalculator application
The output of window application calculator is shown here: -
Figure 3 Program Output
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a. Addition operation
Insert operand 1
Figure 4 Insert operand1 for addition
Insert operand 2
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Figure 5 Insert operand2 for addition
The result of operand1 + operand 2
Figure 6 Result of addition
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b. Subtraction operation
Insert operand1
Figure 7 Insert operand1 for subtraction
Insert operand2
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Figure 8 Insert operand2 for subtraction
The result of operand1 - operand2
Figure 9 Result of subtraction
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c. Multiplication operation
Insert operand 1
Figure 10 Insert operand1 for multiplication
Insert operand2
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Figure 11 Insert operand2 for multiplication
The result of operand1 * operand2
Figure 12 Result of multiplication
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d. Division operation
Insert operand1
Figure 13 Insert operand1 for division
Insert operand2
When operand2 is 0 error message is generated.
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Figure 14 Error message displayed
Again, insert operand2
Figure 15 insert operand2 for division
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Result of operand1 / operand2
Figure 16 Division result
e. Clear Operation
Figure 17 Clear operation
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Figure 18 calculator reset after clear operation
Backspace operation:
Before pressing Backspace the screen:
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Figure 19 Before pressing backspace
After pressing backspace one time the screenshots of the calculator:
Figure 20 After pressing backspace
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Mix Calculation
First operand:
Figure 21 first operand
Second operand:
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Figure 22 Second Operand
Addition:
Figure 23 Result of addition
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Multiply by 2
Figure 24 multiply by 2
Result:
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Figure 25 result of multiplication
Divide by 4
Figure 26 Divide by 4
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Subtract by 3
Figure 27 Subtract by 3
Final result:
Figure 28 Final result of mix operation
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Question 2
a) Explain what Arrays are and how one and two-dimensional arrays are declared
and initialised in VB. Give one exampleof each to illustrate your answer.
An array is a data structure which is used to store the variables of thesame type.
The array is used to store thesame size of variables.
1-D array creation in VB.NET
Dim intData(20)
This statement is used to create an integer array of size 21.
Dim strData(10)
This statement is used to create a string array of size 11.
Another way to create an integer array and initialization of array elements.
Dim intData() as Integer = {2,5,1,5,9}
Another way to create a string array and initialization of array elements.
Dim names() as String = {“Peter”, “John”, “Olive”}
2-D array creation in VB.NET
In VB.NET we can create multidimensional arrays.
Dim twoDStringArray (5,10) as String.
3-D array creation in VB.NET
In VB.NET we can create a3-D array by declaring thearray as follows:
Dim threeDIntArray (5,5,5) As Integer(Vb.net-informations, 2017).
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Conclusion
The report is generated which discuss the practical implementation of window
application of calculator. All the operations which can be performed by thecalculator are
briefly discussed with screenshots. In other part of thereport the discussion is made on
arrays in VB.NET. How arrays are created in VB.NET. The report contains detailed
description of window application of calculator created in VB.NET. The visual studio IDE
is used to create the window application of the calculator.
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References
 Dreamincode (n.d.). Basic Calculator In VB.Net - VB.NET Tutorials |
Dream.In.Code. Dreamincode. Available at:
http://www.dreamincode.net/forums/topic/32951-basic-calculator-in-vbnet/
(Accessed 8 Mar. 2018).
 Vb.net-informations (2017). How to use VB.NET Arrays. Vb.net-informations.
Available at: http://vb.net-informations.com/collections/vb.net_arrays.htm
(Accessed 8 Mar. 2018).
 Vb.net-informations.com. (2018). How to Create a vb.net Windows Forms
Application. Available at: http://vb.net-informations.com/gui/windows_forms.htm
(Accessed 10 Mar. 2018).
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Appendix:
27