public static void Main()
Console.WriteLine("Put a string:");
string b = FirstSentence();
Console.WriteLine("The new string is: " + a);
Console.WriteLine("The fisrst sentence is: " + b);
public static string OneStar()
string strSimilar, str1 = "**", strStar;
strStar = Console.ReadLine();
strSimilar = strSimilar.Replace("**", "*");
twoStars = strSimilar.IndexOf(str1);
public static string FirstSentence()
string strStar, str_UpToComma;
strStar = Console.ReadLine();
p = strStar.IndexOf(',');
str_UpToComma = str_UpToComma.Remove(p, end);