How to add value of previous array element to current element

For each element in the array,which is filled with random integers, I need to add value of previous element to it's current element.

This is my code:

   class Program
    {
        static void Main(string[] args)
        {
            int[] numbers = new int[10];
            Random generator = new Random();
            for (int i = 0; i < numbers.Length; i++)
            {
                numbers[i] = generator.Next(0, 100);
            }

            for (int i = 0; i < numbers.Length; i++)
            {
                Console.Write("{0} ", numbers[i]);
            }
            Console.WriteLine();

            for (int i = 0; i < numbers.Length+1; i++)
            {
                Console.Write("{0} ", numbers[i]);
                numbers[i + 1] += numbers[i];
            }