Problem:
Score : 100 points

Problem Statement

Given is a lowercase English letter C that is not z. Print the letter that follows C in alphabetical order.

Constraints

C is a lowercase English letter that is not z.

Input

Input is given from Standard Input in the following format:

C

Output

Print the letter that follows C in alphabetical order.

Sample Input 1

a

Sample Output 1

b

a is followed by b.

Sample Input 2

y

Sample Output 2

z

y is followed by z.

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;
using System.Linq;

class Program
{
    static void Main(string[] args)
    {
        //整数の入力
        string c = Console.ReadLine();

        //値の判定
        switch (c)
        {
            case "a":
                Console.WriteLine("b");
                break;
            case "b":
                Console.WriteLine("c");
                break;
            case "c":
                Console.WriteLine("d");
                break;
            case "d":
                Console.WriteLine("e");
                break;
            case "e":
                Console.WriteLine("f");
                break;
            case "f":
                Console.WriteLine("g");
                break;
            case "g":
                Console.WriteLine("h");
                break;
            case "h":
                Console.WriteLine("i");
                break;

            case "i":
                Console.WriteLine("j");
                break;
            case "j":
                Console.WriteLine("k");
                break;
            case "k":
                Console.WriteLine("l");
                break;
            case "l":
                Console.WriteLine("m");
                break;
            case "m":
                Console.WriteLine("n");
                break;
            case "n":
                Console.WriteLine("o");
                break;
            case "o":
                Console.WriteLine("p");
                break;
            case "p":
                Console.WriteLine("q");
                break;
            case "q":
                Console.WriteLine("r");
                break;
            case "r":
                Console.WriteLine("s");
                break;
            case "s":
                Console.WriteLine("t");
                break;
            case "t":
                Console.WriteLine("u");
                break;
            case "u":
                Console.WriteLine("v");
                break;
            case "v":
                Console.WriteLine("w");
                break;
            case "w":
                Console.WriteLine("x");
                break;
            case "x":
                Console.WriteLine("y");
                break;
            case "y":
                Console.WriteLine("z");
                break;
        }
    }
}