Write a C$++$ program that reads text from a file and encrypts the file by adding an encryption factor $($EF$)$ to the ASCII value of each character. The encryption factor is $1$ for the first line and increases by $1$ for each line up to $6$ and then starts over at $1.$ So$,$ for the $6$th line the EF is $6,$ for the $7$th line it is $1,$ for the $10$th line it is $4.$ In General, for the Nth line, the encryption factor is $($N $-1)\%6+1.$If the seventh line of the input file is$,$ This is the seventh line of the file. The seventh line of the encrypted file would have $1$ added to each character. It would look like, Uijt!jt$!$uif!tfwfoui!mjof!pg$!$uif!gjmf$/1.$ Read the provided plain$-1.$txt file one line at a time. Because this file has spaces, use getline$\mathrm{.}2.$ Change each character of the string by adding the encryption factor to it$\mathrm{.}3.$ Write the encoded string to a second file, such as coded.txt$4.$ The encoded file should have the same structure as the original file, if the second line of the original file has $24$ characters $($including spaces$)$ then there should be $24$ characters on the second line of the encoded file $($spaces will now be replaced by the characters $!,,$ #$,$$$,\%,$&$).$