pocet.cs

using System;
using System.Collections.Generic;

internal class Program {

    static void Main(string[] args) {
        Console.Write("Zadej řetězec: ");
        string line = Console.ReadLine();
        string[] words = line.Split(' ');
        Console.WriteLine(words.Length);
        foreach (string word in words) {
            if (word.Length >=1) {
                Console.Write(word[0]);
                Console.Write(' ');
            }
        }
        Console.WriteLine();
        Console.WriteLine(line.ToUpper());
        Console.WriteLine(line.Length);
    }
}