C :

#include<stdio.h>
#include<stdlib.h>
struct aaa
{
 int xx;
 struct aaa *next;
};
int main()
{
  struct aaa *creat(struct aaa *head1,int N);
  void print(struct aaa *head1);
  struct aaa *link(struct aaa *head1,struct aaa *head2);
  struct aaa *head1,*head2;
  int N,M;
  head1 = head2 = NULL;
  scanf("%d",&N);
  head1=creat(head1,N);
  scanf("%d", &M);
  head2=creat(head2,M);
  head1 = link(head1,head2);
  print(head1);
  return 0;
}
struct aaa *creat(struct aaa *head1,int N)
{
   struct aaa *p1,*p2;
   while (N--)
   {
   	p1 = (struct aaa *)malloc(sizeof(struct aaa));
   	scanf("%d", &p1 -> xx);
   	p1 -> next = NULL;
   	if (head1 == NULL)
   	    head1 = p1;
   	else
   	    p2 -> next = p1;
   	p2 = p1;
   	}
     return head1;
}
struct aaa *link(struct aaa *head1,struct aaa *head2)
{
     struct aaa *p1;
     p1 = head1;
     while (p1 -> next != NULL)
          p1 = p1 -> next;
     p1 -> next = head2;
     return head1;
}
void print(struct aaa *head3)
{
	struct aaa *temp;
	temp = head3;
	printf("%d", temp -> xx);
	temp = temp -> next;
	while (temp != NULL)
	{
		printf(" %d", temp -> xx);
		temp = temp -> next;
		}
		printf("\n");
	}

C++ :

#include<stdio.h>
#include<vector>
using namespace std;

int main()
{
	int m,n;
	int x;
	//freopen("in.txt","r",stdin);
	while(scanf("%d",&m)!=EOF)
	{
		vector<int>data;
		for(int i=0;i<m;i++)
		{
			scanf("%d",&x);
			data.push_back(x);
		}
		scanf("%d",&n);
		for(int i=0;i<n;i++)
		{
			scanf("%d",&x);
			data.push_back(x);
		}
		vector<int>::iterator it=data.begin();
		printf("%d",*(it));
		it++;
		for(;it!=data.end();it++)
			printf(" %d",*(it));
		printf("\n");	
	}
	return 0;
}