Strings

s = input()print(len(s))print(s.upper())print(s[::-1])print(s[0])

const s = require("fs").readFileSync(0, "utf8").trim();console.log(s.length);console.log(s.toUpperCase());console.log([...s].reverse().join(""));console.log(s[0]);

import { readFileSync } from "node:fs";const s: string = readFileSync(0, "utf8").trim();console.log(s.length);console.log(s.toUpperCase());console.log([...s].reverse().join(""));console.log(s[0]);

import java.util.Scanner; public class Main {    public static void main(String[] args) {        String s = new Scanner(System.in).nextLine().trim();        System.out.println(s.length());        System.out.println(s.toUpperCase());        System.out.println(new StringBuilder(s).reverse());        System.out.println(s.charAt(0));    }}

using System; class Program{    static void Main()    {        string s = Console.ReadLine().Trim();        Console.WriteLine(s.Length);        Console.WriteLine(s.ToUpper());        char[] r = s.ToCharArray();        Array.Reverse(r);        Console.WriteLine(new string(r));        Console.WriteLine(s[0]);    }}

#include <cctype>#include <iostream>#include <string> int main() {    std::string s;    std::cin >> s;    std::cout << s.size() << '\n';    std::string up = s;    for (char& c : up) c = std::toupper(static_cast<unsigned char>(c));    std::cout << up << '\n';    std::cout << std::string(s.rbegin(), s.rend()) << '\n';    std::cout << s[0] << '\n';}

#include <ctype.h>#include <stdio.h>#include <string.h> int main(void) {    char s[101];    scanf("%100s", s);    int n = strlen(s);    printf("%d\n", n);    for (int i = 0; i < n; i++) putchar(toupper((unsigned char)s[i]));    putchar('\n');    for (int i = n - 1; i >= 0; i--) putchar(s[i]);    putchar('\n');    printf("%c\n", s[0]);    return 0;}

s = Console.ReadLine();Console.WriteLine(s.Length);Console.WriteLine(s.ToUpper());Console.WriteLine(s.Reverse());Console.WriteLine(s[0]);