int[] result = new int[255];
            int total = 0;
            int character = 0;
            StreamReader sr = new StreamReader("zadani.txt");
            while(!sr.EndOfStream){
                character = sr.Read();
                if (character > 32 && character < 125){
                    result[character-32] += 1;
                    total++;
                }
            }
            for (int i = 0; i < 125-32; i++)            {
                Console.WriteLine((char)(i+32) + ":"+100*(float)result[i]/total+"%");
            }
            Console.Read();