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#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
struct LinkList
{
   int data;
   struct LinkList *next;
};
struct LinkList Reverse ( LinkList *list ) 
{
    LNode   *tmp = NULL;
    LNode   *p = NULL;
 
    if (list == NULL)
    {
        return NULL;
    }
    tmp = list->next;
    while (tmp->next != NULL)
    {
        p = tmp->next;
        tmp->next = p->next;
        p->next = list->next;
        list->next = p;
    }
    return list;
}
int  main( )
{
  int i=0;
  int b;
  struct  LinkList  *L;
  struct  LinkList  *p;
   struct LinkList  *q;
 
  p=L->next;
  while (b!= -1)
  {
    while( scanf("%d\n",&b)&&(b>0) )
           { p->data=b;
             p=p->next;
             i++;
           }
   }
 
   struct  LinkList Reverse ( LinkList  *L );
 
   q=L->next;
  while(i>=0)
    {
      printf("%d\n",q->data);
      i--;
 
    }  
  return 0;
}
 

prog.cpp: In function 'LinkList Reverse(LinkList*)':
prog.cpp:11:5: error: 'LNode' was not declared in this scope
     LNode   *tmp = NULL;
     ^
prog.cpp:11:14: error: 'tmp' was not declared in this scope
     LNode   *tmp = NULL;
              ^
prog.cpp:12:14: error: 'p' was not declared in this scope
     LNode   *p = NULL;
              ^
In file included from /usr/include/malloc.h:23:0,
                 from prog.cpp:3:
prog.cpp:16:16: error: could not convert '0' from 'int' to 'LinkList'
         return NULL;
                ^
prog.cpp:26:12: error: could not convert 'list' from 'LinkList*' to 'LinkList'
     return list;
            ^

Standard output is empty