#include"iostream"
#include"fstream"
using namespace std;

int main()
{
 ifstream fin1,fin2;
 ofstream fout;
 char next;
 char if_name1[15],if_name2[15],of_name[15];

 cout<<"Please enter the name of the first infile"<<endl;
 cin>>if_name1;
 fin1.open(if_name1);
 if(fin1.fail())
 {
  cout<<"Can not open the infile "<<if_name1<<endl;
  exit(1);
 }
 
 cout<<"please enter the name of the outfile"<<endl;
 cin>>of_name;
 fout.open(of_name);
 if(fout.fail())
 {
  cout<<"Can not open the outfile "<<of_name<<endl;
  exit(1);
 }
 
 while(!fin1.eof())
 {
  fin1.get(next);
  fout<<next;
 }

 fin1.close();
 fout.close();
 
 cout<<"please enter the name of the second infile"<<endl;
 cin>>if_name2;
 fin2.open(if_name2);
 if(fin2.fail())
 {
  cout<<"Can not open the infile "<<if_name2<<endl;
  exit(1);
 }

 fout.open(of_name,ios::app);
 
 while(!fin2.eof())
 {
  fin2.get(next);
  fout<<next;
 }

 fin2.close();
 fout.close();
 
 cout<<"Succeed"<<endl;
 return 0;
}