In basic C++ please.

(1) Write a program to read a text file containing a secret message. Start by reading the input and output file names entered by the user through standard input. The input file contains a text with hidden words, represented by uppercase letters. The input file will contain multiple lines, each representing a new word of the hidden message.

Ex: if the user inputs:

input.txt output.txt 

and if the following message is in the input file:

Hi it has bEen a whiLe since i Last saw yOu 

The secret message is:

HELLO 

Output the secret message into the output file specified by the user. If the message contains multiple words, separate them with whitespaces and end with a new line.

It is possible that the specified input file does not exist, in which case you should print the message

File not found 

and end the program

(2) Read an additional line from standard input and encrypt in it the secret message, using the same strategy of capitalizing the letters. You can assume that the input will consist of only one line and all letters in this line will be initially lowercase. For example, the line could be:

i have always wanted to learn to play soccer. 

After encrypting HELLO (the hidden message found at the previous step) the line would look like this:

i HavE aLways wanted to Learn tO play soccer. 

Note that the letter have been capitalized in the order in which appear, to maintain the readability of the hidden message. Add the new line with the encrypted message to the same output file, after adding a new line to separate it from the hidden message. For example, the whole output file from the example above would look like this:

HELLO i HavE aLways wanted to Learn tO play soccer. 

Hints:

• The functions toupper(char), tolower(char) and isupper(char) will be useful in this exercise. They all can be used on characters within a string. No additional libraries required.
• If you can not complete (2), you can safely ignore that portion of the input.