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  1.               struct node
  2.               {
  3.                   int date;
  4.                   node *lc;
  5.                   node *rc;
  6.               };      
  7.  
  8.  
  9.               void vin(int k)
  10.              {
  11.                   node *t=new node;
  12.                   t->date = k;
  13.                   t->lc=NULL;
  14.                   t->rc=NULL;            
  15.                   if(start == NULL)
  16.                   {
  17.                           start=t;
  18.                   }
  19.                   else if(start->date < k)
  20.                   {    
  21.                        if(start->rc==NULL)
  22.                                           start->rc=t;
  23.                        else
  24.                        {                   
  25.                              start = start->rc;
  26.                              vin(k);
  27.                        }
  28.                   }
  29.                   else
  30.                   {  
  31.                        if(start->lc==NULL)
  32.                                           start->lc=t;
  33.                         else
  34.                         {                       
  35.                                                 start = start->lc;
  36.                                                 vin(k);
  37.                         }
  38.                   }
  39.              }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.cpp: In function ‘void vin(int)’:
prog.cpp:13:25: error: ‘NULL’ was not declared in this scope
                   t->lc=NULL;
                         ^
prog.cpp:15:22: error: ‘start’ was not declared in this scope
                   if(start == NULL)
                      ^
stdout
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Standard output is empty
https://ideone.com/FNDNpq
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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