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 Rust (1.15.1) (judge verdict: Accepted)

use std::io::Read;

fn main() {
    let c: char = {
        let mut buf = String::new();
        std::io::stdin().read_to_string(&mut buf).unwrap();
        let mut iter = buf.split_whitespace();
        iter.next().unwrap().chars().next().unwrap()
    };
    
    println!("{}", ((c as u8) + 1) as char);
}