Write a CH+ program that reads from a file name specified in the command line as an argument, and ignores any extra command line arguments that are provided after the file name. However, if no file name is provided, the program should use the standard input instead of a file. If the file cannot be opened, print on a new line "File cannot be opened: ", followed the file name, and exit. The program should read from the file character by character until the end of file. If the input file is empty, print out the message "File is empty." on a new line and then exit. The program should count the number of lines, number of words, number of characters, number of digit characters (0% - "9'), and the number of alphabetic characters seen in the file. For example, with an input file of the following contents: 3456 Georgre 10.25 1234 smith 4.5 4321 staci 12.75 278 sandra 25.35 The displayed output is as shown below: LINES: 4 WORDS: 12 CHARS: 75 DIGITS: 29 LETTERS: 21 Hints: 1. Use