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 Go (1.6) (judge verdict: Accepted)

package main

import (
	"fmt"
)

func main() {
	var str string = "abcdefghijklmnopqrstuvwxyz"
	var si string

  fmt.Scanf("%s", &si)

	for i := 0; i < len(str)-1; i++ {
		if si == str[i:i+1] {
			fmt.Println(str[i+1:i+2])
		}
	}
}