text: #include<stdio.h>
  #include<stdlib.h>
  #include<conio.h>
  
  void main(){
  struct reg *temp;
  int regID;
  clrscr();
  
  do{
  struct reg *new_reg,*current;
  pstart=start;
  new_reg=(struct reg *)malloc(sizeof(struct reg));
  
  printf("\nEnter RegionID:");
  fflush(stdin);
  scanf("%d",);
  }
  
  }
  
  struct reg
  {
      struct reg *prev;
      int regID;
      struct reg *regbndry;
      struct reg *next;
  };
  
  struct reg *pstart=NULL,*start=NULL;
  