Identify and correct the errors in each of the following pieces of code.

C#

a1) For (i=100,i>=1,++i) \{ \} bonsole. Writeline( i) The following code should display whether integer value is odd or even: switch (value \% 2) case0:Console.WriteLine("Eveninteger");case1: Console.WriteLine("Odd integer"); \} c-1) The following code should output the odd integers from 19 to 1 : d-1) The following code should output the even integers from 2 to 100 : counter =2; do {Console.Writeline(counter);counter+=2; \} While (counter