C# Answers

How are you getting the prices of the bill?

1.Make a Console App with a class that encapsulates the following information about a bird: English name, Latin name, and Date last seen. Allows the user to fill in the details about a bird. The data is saved in a Bird object, which is then displayed to the user. 2.In the program, create a superclass called Animal and update class Bird to inherit from it. Create a new class named Butterfly that allows the user to collect butterfly data. 3.Display the percentage of birds and butterflies in the app when displaying the birds and butterflies. When there are no entries in the app yet, use exception handling to handle the divide by zero. 4.Create an interface called ISighting with a single method called displaySighting. Implement the interface in Animal but leave the displaySighting method abstract. Implement the displaySighting method in both the Bird & Butterfly classes to display all the information known about the animal to the console.Update app so that the user can choose to add a bird or a butterfly.

The program simply calculates the pay(hourlyrate*normal hours)

Output displayed

Enter hourly rate : 21,50

Enter normal hours worked : 2

Hourly rate : R21,50. Normal hours :2

PAY : R43,00

Create a program using C# that implements the stream ciphers Cryptographic method . A stream cipher method inputs digits, bits, or characters and encrypts the stream of data. The onetime pad is an example of a stream cipher.

In this formative you have been requested to create an application that will work as the One-time pad (OTP), also called Vernam-cipher or the perfect cipher. This is a crypto algorithm where plaintext is combined with a random key and generate a ciphertext.

Marks allocation 

1. The programme should received a string " How are you Isaac " - 10

2. The programme should generate an OTP of the length of the string entered "How are you Isaac "- 10

3. The program should Generate a Ciphertext based on the above example- 30

Create console programs:

Example output:

Enter 5 grades:

90

83

87

98

93

The average is 90.2 and round off to 90.

Create a program using C# that implements the stream ciphers Cryptographic method . A stream cipher method inputs digits, bits, or characters and encrypts the stream of data. The onetime pad is an example of a stream cipher.

In this formative you have been requested to create an application that will work as the One-time pad (OTP), also called Vernam-cipher or the perfect cipher. This is a crypto algorithm where plaintext is combined with a random key and generate a ciphertext.

Marks allocation 

1. The programme should received a string " How are you Isaac " - 10

2. The programme should generate an OTP of the length of the string entered "How are you Isaac "- 10

3. The program should Generate a Ciphertext based on the above example- 30

Using C# and Visual Studio, design and implement a standalone command-line application that

fulfils the following requirements:

1. The user shall be able to enter the following values:

a. Gross monthly income (before deductions).

b. Estimated monthly tax deducted.

c. Estimated monthly expenditures in each of the following categories:

i. Groceries

ii. Water and lights

iii. Travel costs (including petrol)

iv. Cell phone and telephone

v. Other expenses

Write a C# program that displays the current directory and then and size of all files are stored in the directory. Your display should be aesthetically pleasing. Numbers should be number aligned and matted with a separator. Provide headings over the column listings.

Using visual studio (C#) to create a program, name it PRGYOURNAMEFA1, that implements a search and replace function recursively. Your program should allow a user to enter a string , a substring to be replaced in the entered string and a character/s to replace the found substring

Program Structure

1. A main class that implements the logic of the program – name this class TestSearchReplace

2. Add a class named SearchReplace to the main class with two methods, including:

a. SearchSubstring()- return method

b. ReplaceSubString() - void method

The two method should be called using an object in the main class. DONT CREATE THE TWO METHODS IN THE MAIN CLASS

Sample Output

Create a program using C# that implements the stream ciphers Cryptographic method . A stream cipher method inputs digits, bits, or characters and encrypts the stream of data. The onetime pad is an example of a stream cipher.

In this formative you have been requested to create an application that will work as the One-time pad (OTP), also called Vernam-cipher or the perfect cipher. This is a crypto algorithm where plaintext is combined with a random key and generate a ciphertext.

Marks allocation

1. The programme should received a string " How are you Isaac " - 10

2. The programme should generate an OTP of the length of the string entered "How are you Isaac "- 10

3. The program should Generate a Ciphertext based on the above example- 30