Problem Description in C$++$

Write a program that will prompt the user for the names of two files, one containing a coded message and

one that will be used as the cipher text key. The program must read the coded message into an array of

strings and use the cipher text key to decode the message.

Steps

Creat a function getfilekane$().$ Use the function to get the coded message and cipher text

key file names and store them in variables in rain$().$

string getFileVame$()$; $//$ Returns a the string with the filenane

Copy the getmessage$()$ function from the lab. Use the function to open the coded message and

read it into an array of strings. Don't forget to declare an array large enough to hold all the

codes from the message file. Message files will be limited to $100$ lines.

Copy the sortarray$()$ function from the lab and use it to sort the array holding the message

codes. Don't forget to copy the supporting functions so that you can compare integer page

numbers instead of strings when sorting. $($You may want to make a copy of the array before

sorting it$,$ but it's not required for this assignment.$)$

Create a function getpagelines$().$ You will need this function during the decoding process.

The function reads a specified page of text $($from the coded message$)$ into an array of strings

that holds each line of text on the page. The only difference between what you did when

reading the coded message text and reading a page of the cipher book is that you will have to

find a way to skip all the text on previous pages. Hint: you will know that you are done reading a

page when you encounter another page number.

int getPagelines$($const string$$ FN$,$ int pageNum, string a$[],$ int Nax$\_$LINES$)$;

parameter description

FN

filename

pagenum

Dage to coov

the array that holds the page

the array size

Decode and print the message.

To decode the message follow these steps

Create a string variable to hold the decoded message.

Create variables that can hold the page number, line number, and character position available

in a single

code.

For each line in the message file:

Extract the page number, line number, and character position. Don't forget: the line number and

character position number both start counting from one, whereas arrays start counting from $0.$

Using the page number and any other required arguments, call

the getpagelines$()$ function. Don't forget to declare an array to hold the lines of text from the

Cipher Text. Your array containing the page lines should now be populated with the lines from

the page.

The line number you extracted $($and adjusted if needed$)$ is an important index for use with the

array that's holding the lines of text from the page. This index points to the page line that

contains the target character.

The character position you extracted contains the location of the character in the line and can

be used with

str$.$at$($charpas$).$

Once the character is retrieved, concatenate it to the string variable that holds the decided

message.

Print the message

Input Specification

User Input

Prompt the user with "Enter the file name of the coded message: $"$ to get the message file

name.

Prompt the user with "Enter the file name of the cipher text key: $"$ to get the cipher text file

name.

File Input

This program requires two input files.

Wizard$\_$of$\_$Oz$.$txt $($cipher text file$)$

$-/$home$/$shared$/$cs$135/$jpristas$/$pa$08$a$/$Wizard$\_$of$\_$Oz$.$txt

pa$08$a$-$CodedMessage$0.$txt $($coded message$)$

$/$home$/$shared$/$cs$135/$jpristas$/$pa$08$a$/$pa$08$a$-$CodedMessage$1.$txt

Sample Interaction

$$./$paesa

Enter the file nane of the coded message: paeda$-$CodedMessage$1.$txt

Enter the file nane of the cipher text key: Wizard$\_$of$\_$Oz$.$txt

Your mission is to go to Switzerland and find out what the arny does with those

wee red knives