Thread: please debug the following code....

Was trying to implement a simple linked list program using c++ with only insert and display operations.There was no problem during compile time...the result was absent

Compiler Used:

DEV C++ 4.9.9.2

Code:

#include <iostream>#include <conio.h>
#include <process.h>


using namespace std;


class NODE 
{
      friend class LINKEDLIST;//to make LINKEDLIST a friend of NODE
      //in order to access NODE
      //but NODE cant access LINKEDLIST
      private:
              int DATA;
              NODE *LINK;
      
};
class LINKEDLIST
{
      private:
              NODE *START;
      public:
             LINKEDLIST(){START=NULL;}
             LINKEDLIST &Insert(int x);     
             void Display();        
              
      };
LINKEDLIST &LINKEDLIST::Insert(int x)
{
           NODE *NEW= new NODE;
           NEW->DATA=x;
           NEW->LINK=START->LINK;
           START=NEW;
           return *this;
}
void LINKEDLIST::Display()
{
     NODE *ptr=START;
     while(ptr!=NULL)
     {
                     cout<<ptr->DATA<<" "<<endl;
                     ptr=ptr->LINK;
     }
}
      
      int main()
      {
          LINKEDLIST L;
          L.Insert(45);
          L.Insert(78);
          L.Insert(10);
          L.Insert(99);
          L.Insert(16);
          L.Display();
          getch();
          return 0;
          }

Code:

 NEW->LINK=START->LINK;

If START is still NULL (ie you're inserting the first element), you are in big trouble here.

thank you very much I have already got that ...thanks for responding