Stack Overflow exception ..

[SaimaAsif]

Working on discrete event simulator implemented using sorted list, for asunchronous coomunication. As I tried to put more than 10000 value in the loop. its giving me error of stack overflow exception. although I am not recursively calling any function plz help me its very important for me hanging for weeks for this...

using visaul C++ .Net

#include< math.h>
#include< time.h>
#include<List>
using namespace System;
using namespace System::Collections::Generic;
using namespace System::Linq;
double lambda,MuBro,MuSer,MuClient,Simtime;
 
double Min(double y,double z)
   {
    if(y<z)
        return y;
    else
        return z;
    }
 
double expntl(double x)
    {
      double z,y;     /* Uniform random number from 0 to 1 */
 
      /* Pull a uniform RV (0 < z < 1) */
      do
      {
 
          z = ((double) rand() / RAND_MAX);
      }
      while ((z == 0) || (z == 1));
 
      /* Inversion formula for exonential RV */
      y=(-1/x) * log(z);
      return y;
    }
 
public ref class Example
{
public:
    static void Main()
    {
 
   struct Analys
     {  
       double TBa;
       double TBss;
       double TBsf;
       double Client;
       double WS;
       double TSsf;
      }Ana[20000];
 
        Console::WriteLine("Please Enter the value of lambda-Arrival rate");
        std::cin>>lambda;
        Console::WriteLine("Please Enter the values for Mu for Client");
        std::cin>>MuClient;
        Console::WriteLine("Please Enter the values for Mu for broker");
        std::cin>>MuBro;
        Console::WriteLine("Please Enter the values for Mu for Server");
        std::cin>>MuSer;
     double NormWork[20000];
     for(int i=0;i<20000;i++)
     {
       NormWork[i]=0.0;
     }
  double avgNormWork=0.0;
  int Qbro=0,numDep=0,Qserver=0;     
  double Qsum=0.0,currtime=0.0;
  SortedList<double, String^>^ slist = gcnew SortedList<double, String^>();
 double TW=0.0, Wser=0.0, totalworkdone=0.0;
 double value=0.1;  
  int cursor=0; 
  srand(clock());
  double Wc=0.0; 
  double Time=0,TimDep=0.0;
  double ClientWork=0.0;  
 Time=currtime+expntl(lambda);  
 slist->Add(Time,"ABro");
 int id=0;
 int no=0;
 
 while(id<=20000)//*******this is loop accepting 10000 and giving right answer but wrong as 20000 is being put in it.
  {
    currtime=slist->Keys[cursor];   
    if(slist->Values[cursor]=="ABro")                                                
      {        
        Qbro=Qbro+1;
        Wc=expntl(MuClient);         
        Ana[no].Client=Wc;           
        Ana[no].TBa=currtime;
        no=no+1;
 
        Time=currtime+expntl(lambda);    //schedualing another arrival in the event queue
        slist->Add(Time,"ABro");        
        Time=currtime+value;
        slist->Add(Time,"SSBro");        
       }
    else
       if(slist->Values[cursor]=="SSBro") 
        {
         TimDep=currtime+expntl(MuBro);
         slist->Add(TimDep,"SFBroAser");
         }
       else
          if(slist->Values[cursor]=="SFBroAser")
           {
             Qbro--;
             Qserver= Qserver+1;
             Time=currtime+value;
             slist->Add(Time,"SSSer");            
           }
          else 
             if(slist->Values[cursor]=="SSSer")
              {
               Wser=expntl(MuSer);
               TimDep=currtime+Wser;
               Ana[id].WS=Wser;
               slist->Add(TimDep,"SFSer");               
              }
             else
               if(slist->Values[cursor]=="SFSer")
               {
                Qserver--;                
                Ana[id].TSsf=currtime;
                id=id+1;
                numDep++;
                }                
     cursor=cursor+1;
   }
 
 for(int i=0; i<id; i++)
        {
 
         TW=Ana[i].TSsf-Ana[i].TBa;            
         ClientWork=Min(Ana[i].Client,TW);
         NormWork[i]=(ClientWork+Ana[i].WS)/TW;
         totalworkdone=totalworkdone+NormWork[i];       
        }  
  avgNormWork= totalworkdone/(id-1);
  Console::WriteLine("No of messages arrived in the system were {0}", id); 
  Console::WriteLine("the average normalised work is   {0}", avgNormWork);   
  Console::ReadLine(); 
 
 }
};
 
int main(array<System::String ^> ^args)
{
   Example::Main();
    return 0;
}

[Justin Ellison]

This may be as simple as increasing your stack size. Check out this article: http://support.microsoft.com/kb/315937