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: Wrong Answer)

using System;

namespace ABC151
{
	class Program
	{
		static void Main(string[] args)
		{
			//int a = int.Parse(Console.ReadLine());

			//string[] input = Console.ReadLine().Split(' ');
			//int b = int.Parse(input[0]);
			//int c = int.Parse(input[1]);

			//string s = Console.ReadLine();
			//Console.WriteLine(a + b + c + " " + s);

			//Console.ReadLine();

			string[] words = {"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u,","w","x","y","z" };

			string input = Console.ReadLine();

			var i = Array.IndexOf(words,input);

			if (i != 25)
			{
				Console.WriteLine(words[i + 1]);
			}
			Console.ReadLine();

		}
	}
}