Problem:
Toggling Cases

Write a program which converts uppercase/lowercase letters to lowercase/uppercase for a given string.

Input

A string is given in a line.

Output

Print the converted string in a line. Note that you do not need to convert any characters other than alphabetical letters.

Constraints

The length of the input string < 1200

Sample Input

fAIR, LATER, OCCASIONALLY CLOUDY.

Sample Output

Fair, later, occasionally cloudy.

Solution in Scala (judge verdict: Accepted)

object Main{
  def main(args:Array[String]) = {
    io.Source.stdin.mkString.toCharArray.foreach(x => print(swap_case_as_int(x.toInt).toChar))
  }
  def swap_case_as_int(int: Int) : Int ={
    if (65 <= int && int <= 90) int + 32
    else if (97 <= int && int <= 122) int - 32
    else  int
  }
}