using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication5
{
    class Program
    {
        public static string FirstCharToUpper(string input)
        {
            return input.First().ToString().ToUpper() + String.Join("", input.Skip(1));
        }
        static void Main(string[] args)
        {
            string abc = "pawel";
            abc = FirstCharToUpper(abc);
            Console.WriteLine(abc);
            Console.ReadKey();

        }
    }
}