hello group
hi, i am a beginner, i do a program to work equation but it cannot work well,
i need your help ,thank you very much.




using System;
using System.Globalization;
namespace ConsoleApplication2
{
        class Class1
    {


        static void Main(string[] args)
        {

        {
            int i, j, k;
            double client, temp = 0.0;
            double[,] a=new double[3,4];
            int n=3;






            ///matrix a
            for (i = 0; i < 3; i++)
            {
                for (j = 0; j < 4; j++)
                {
                    a[i,j]=(i+2)*(i+3)+1;
                }
            }




            for(k = 0; k < n - 1; k++)
            {
                for(i = k + 1; i < n; i++)
                {
                    client = a[i,k]/a[k,k];
                    for(j = k + 1; j < n; j++)
                        a[i,j] = a[i,j] - client * a[k,j];

                    a[i,n] = a[i,n] - client * a[k,n];
                }
            }

            //the last unknown value
            a[n - 1,n] = a[n - 1,n]/a[n - 1,n - 1];
        {
            for(i = n - 2; i >= 0; i--)
            {
                for (j = i + 1; j < n; j++)
                    temp += a[i,j] * a[j,n];
                a[i,n] = (a[i,n] - temp) / a[i,i];
            }


            for(i = 0; i < n; i++)
                Console.Write(a[i,n]+"\t");//output }
            Console.WriteLine();
        }
            Console.ReadLine();


        }
    }
}

What are you trying to do? What is the goal of the program?

Brandon