encode and decode messages

You will be provided with an input file that has a series of encoded messages. You will need to read in the file and decode the messages. You must check to make sure that the input file has been opened. The first 26 lines of the input file will tell you what each coded letter should equal. For example: ‘A = Z’ means that for every A in a coded message, it should be replaced with a Z. You should store this information in an array for easy decoding. This set of information will always be presented A through Z so that you may assign an array position to a letter, i.e., index 0 will always be A. The next number in the file will be the number of coded messages that will be contained in the file. This number should be used to make array of the structs (i.e., the number is the size of the array). You will need to create a struct that contains an integer type of variable that keeps track of which message number is contained in the struct, and two strings, the coded message and the decoded message. struct messages{ int messageNum; string codedMessage; string decodedMessage; }; Then, using the getline function, you should read in a whole line of the file at a time and store it in the appropriate struct location (i.e., the string member variable of the struct used to store the coded message). You will then decode the message and store it in the appropriate struct location. A function is recommended for decoding, but not required. Once all the messages are decoded, you should go over the array of struct and print each element with its corresponding message number, the coded message, and the decoded message, to the file [login to view URL] 3 - Example Input and Output You have been provided with 5 input files for each test case in Black board(BB) and a sample output file too. BB consist of 5 input files namely [login to view URL] for test case 1, [login to view URL] for test case 2, [login to view URL] for test case 3, [login to view URL] for test case 4, [login to view URL] for test case 5. You need to provide input file name in zybooks, for example : [login to view URL] Contents of [login to view URL] A = Z B = Y C = X D = W E = V F = U G = T H = S I = R J = Q K = P L = O M = N N = M O = L P = K Q = J R = I S = H T = G U = F V = E W = D X = C Y = B Z = A 2 SLD NZMB KILTIZNNVIH WLVH RG GZPV GL XSZMTV Z ORTSG YFOY? MLMV, GSZG’H Z SZIWDZIV KILYOVN OUTPUT It should generate a file named [login to view URL] Contents of [login to view URL] : Message Num: 1 Coded Message SLD NZMB KILTIZNNVIH WLVH RG GZPV GL XSZMTV Z ORTSG YFOY? Decoded Message HOW MANY PROGRAMMERS DOES IT TAKE TO CHANGE A LIGHT BULB? Message Num: 2 Coded Message MLMV, GSZG’H Z SZIWDZIV KILYOVN Decoded Message NONE, THAT’S A HARDWARE PROBLEM