StringCapitals

using System;
using System.Text;


namespace StringOp
{
    class Program
    {

        static string Capitals(string text)
        {
            string cap = "";
            bool isCapital = false;
            foreach (char symbol in text)
            {
                if (symbol == '[')
                {
                    isCapital = true;
                }
                else if (symbol == ']')
                {
                    isCapital = false;
                }
                else
                {
                    if (isCapital)
                    {
                        cap += char.ToUpper(symbol);
                    }
                    else
                    {
                        cap += symbol;
                    }
                }
            }
            return cap;
        }
        static void Main(string[] args)
        {

            string text = "Hello. I'm [from] Pravets! I'm C# [developer]!";
            // Hello. I'm FROM Pravets! I'm C# DEVELOPER!
            Console.WriteLine(Capitals(text));
        }
    }
}