Hi all,

I'm new to c-sharp, so I will appreciate if you guys go easy on me.

I have to write a recursive function to form the sum of two positive integers a and b. I have to test the program by calling it from a main program that read two integers from the keyboard and uses your function to complete and print the sum, along with two numbers. I have to call my function recSum.

Please enter first number: 4
Please enter second number: 9


From start of body: 4 9
From start of body: 3 9
From start of body: 2 9
From start of body: 1 9
From start of body: 0 9
From end of body: 1 9
From end of body: 2 9
From end of body: 3 9
From end of body: 4 9

The sum of 4 and 9 is 13.

<---------THIS IS WHAT I HAVE SO FAR-------->

static void Main(string[] args)
            int a, b;
            int addition;

            Console.Write("Please Enter First Number: ");
            a = Convert.ToInt32(Console.ReadLine());
            Console.Write("Please Enter Second Number: ");
            b = Convert.ToInt32(Console.ReadLine());


            addition = recSum(a, b);
            Console.WriteLine("\nThe sum of {0} and {1} is {2}\n",a,b,addition);


        static int recSum(int x, int y)
            int result = 0;

            if (y >= 0)

                for (int i = x; i >= 0 ; i--)
                    Console.WriteLine("From start of body: {0} {1}", i, y);

                    if (i == 0)
                        for (int j = i+1; j <= x; j++)
                            Console.WriteLine("From end of body:   {0} {1}", j, y);

                result = x + y; //should be a recursive function
            }return result;
The program is working fine but if you notice, it does not have a recursive function.
So how do I create a recursive function for this calculation.

Please guide me.

Thanks a lot for your time.