Identify and correct the errors in each of the following pieces of code. [Note: There may be more than one error in each part of the code].

C#

a) if ( age >=65); \{ Console.WriteLine("Age greater than or equal to 65); \} else \{ Console.Writeline("Age is 7ess than 65)"; b) int x=1, total; while (x0) \{ Console.WriteLine (y); ++y