Source
#include <stdio.h> #include <stdlib.h> struct st { int data; struct st *next; }; int main() { int n,i,t=0; struct st *head,*q,*p,*d; scanf("%d",&n); head=(struct st*)malloc(sizeof(struct st)); head->next=NULL; for(i=0; i<n; i++) { p=(struct st*)malloc(sizeof(struct st)); scanf("%d",&p->data); p->next=head->next; head->next=p; p=p->next; } printf("%d\n",n); p=head->next; printf("%d",p->data); p=p->next; while(p) { printf(" %d",p->data); p=p->next; } printf("\n"); d=head->next; while(d!=NULL) { p=d; q=p->next; while(q!=NULL) { if(d->data==q->data) { t++; p->next=q->next; q=q->next; } else { p=q; q=q->next; } } d=d->next; } printf("%d\n",n-t); p=head->next; printf("%d",p->data); p=p->next; while(p) { printf(" %d",p->data); p=p->next; } printf("\n"); return 0; }