rust language

The program argument is a filename. Your program will read the file and print all of the tokens that it finds. Specifically, your program should be able to detect the following tokens: + rightarrow Plus - rightarrow Minus * rightarrow Stan /rightarrow Slash = rightarrow Equal (rightarrow LeftParen) rightarrow RightParen: rightarrow Semicolon rightarrow Comma For example, with the following input file: +-*/ Your program should produce the following output: Plus Minus Stan Slash Note, your program should skip any whitespace characters that you see (see is_whitespace), and it should stop if it encounters an unknown character. For example, with the following input file (note the spaces between each symbol): + - @ */ Your program should output: Plus Minus