Your task is to write a program which determines (calculates) the percentage ratio of lowercase and uppercase letters.
Your program should accept a file as its first argument. Each line of input contains a string with uppercase and lowercase letters.
For example:
thisTHIS AAbbCCDDEE N UkJ
For each line of input, print the percentage ratio of uppercase and lowercase letters rounded to the second digit after the point.
For example:
lowercase: 50.00 uppercase: 50.00 lowercase: 20.00 uppercase: 80.00 lowercase: 0.00 uppercase: 100.00 lowercase: 33.33 uppercase: 66.67