$($C$++$ please$)$

Program: Caesar Encryption

$($from geek$-$to$-$geek site$)$ The Caesar Cipher technique is one of the earliest and simplest methods of encryption technique. It$$s simply a type of substitution cipher, i$.$e$.,$ each letter of a given text is replaced by a letter with a fixed number of positions down the alphabet. For example, with a shift of $1,$ A would be replaced by B$,$ B would become C$,$ and so on$.$ The method is apparently named after Julius Caesar, who apparently used it to communicate with his officials.

To encrypt and decrypt a given text we need an integer value, known as a shift which indicates the number of positions each letter of the text has been moved down.

You are to write a program that will serve as a tool to encrypt or decrypt a message. An overview of the program is that you need to:

$$ Offer the user the ability to encrypt or decrypt a message The user should select one or the other.

$$ Ask for the file containing the message to be encrypted or decrypted

$$ Ask for the shift number for the decryption$/$encryption key in the algorithm

$$ Write out the result of your algorithm to a $2$nd file $($This can be named by the customer or can be named $$result$.$txt$$

REQUIREMENTS:

$$ Must use:

o File stream

o Array

o Functions

$$ Must be able to encrypt the entire alphabet a$-$z$,$ and numbers $0-9.$The result can be a message of only lowercase letters.

$$ Other characters are just copied, as is$,$ to the result text.

Note: Cannot use

$$ Mathematical equation for Caesar substitution.

$$ Global Variables $($with the exception of

o function declarations

enum datatypes if you decide to use themProgram: Caesar Encryption

$($from geek$-$to$-$geek site$)$ The Caesar Cipher technique is one of the earliest and simplest methods of encryption technique. It's simply a type of substitution cipher, i$.$e$.,$ each letter of a given text is replaced by a letter with a fixed number of positions down the alphabet. For example, with a shift of $1,$ A would be replaced by B$,$ B would become C$,$ and so on$.$ The method is apparently named after Julius Caesar, who apparently used it to communicate with his officials.

To encrypt and decrypt a given text we need an integer value, known as a shift which indicates the number of positions each letter of the text has been moved down.

You are to write a program that will serve as a tool to encrypt or decrypt a message. An overview of the program is that you need to:

Offer the user the ability to encrypt or decrypt a message The user should select one or the other.

Ask for the file containing the message to be encrypted or decrypted

Ask for the shift number for the decryption$/$encryption key in the algorithm

Write out the result of your algorithm to a $2^{nd}$ file $($This can be named by the customer or can be named 'result.txt'Program: Caesar Encryption

$($from geek$-$to$-$geek site$)$ The Caesar Cipher technique is one of the earliest and

simplest methods of encryption technique. It's simply a type of substitution cipher, i$.$e$.,$

each letter of a given text is replaced by a letter with a fixed number of positions down

the alphabet. For example, with a shift of $1,$ A would be replaced by B$,$ B would become

$C,$ and so on$.$ The method is apparently named after Julius Caesar, who apparently

used it to communicate with his officials.

To encrypt and decrypt a given text we need an integer value, known as a shift which

indicates the number of positions each letter of the text has been moved down.

You are to write a program that will serve as a tool to encrypt or decrypt a message. An

overview of the program is that you need to:

Offer the user the ability to encrypt or decrypt a message The user should select

one or the other.

Ask for the file containing the message to be encrypted or decrypted

Ask for the shift number for the decryption$/$encryption key in the algorithm

Write out the result of your algorithm to a $2^{nd}$ file $($This can be named by the customer

or can be named 'result.txt$\text{'}$

REQUIREMENTS:

Must use:

o File stream

o Array

o Functions

$**********$Must be able to encrypt the entire alphabet a$-$z$,$ and numbers $0-9.$ The result can

be a message of only lowercase letters.

Other characters are just copied, as is$,$ to the result text.

Note: Cannot use

Mathematical equation for Caesar substitution.

Global Variables $($with the exception of

o function declarations

o enum datatypes if you decide to use them