C$++$ only

Your job is to create a program that takes in a standard text $(.$txt$)$ file and converts that to a CSV$(.$csv$)$ file. Each item will be designated by an individual item per line in the text file. Well definewhen you should have a new line in the CSV file by an exit character: $-1.$ So$,$ assume each itemis moving horizontally in the CSV$,$ until the exit character which will move the file down.So$,$ the following sample text file:$12-134-1$Would be translated to a CSV file as:$1,23,4$Your program should, take in a base filename $($WITHOUT AN EXTENSION$),$ open that filenamewith $.$txt added and verify the existence in a loop. Once you have a valid file, read the contentsinto a vector and close the input file. Then, open an output file of the input filename with $.$csvadded and write the contents of the vector appropriately.Your program should end with the following files existing:filename.txtfilename.csvA couple sample text files have been provided to use.