why can't I output two files?

[peripheral]

#include <iostream> 
#include <fstream>
#include <string> 
using namespace std; 

int main(int argc, char *argv[]) 
{ 
    char * str1,*str2; 
    str1=argv[1];
 
     ifstream ifs(str1); 
    
     if(!ifs) 
    {         cerr <<"file name is incorrect" <<endl; 
              exit(1);                        } 

     ofstream ofs1("copy.txt",ios_base::out);  
     ofstream ofs2("copy.htm",ios_base::out); 
        if (!ofs1) 
    {   cerr <<"error: can not open \"1.txt\" for output\n"; 
        exit(1);                                  } 
if (!ofs2) 
    {   cerr <<"error: can not open \"1.txt\" for output\n"; 
        exit(1);}
   string line;
    while(getline(ifs, line))  
      {        
          ofs1<<line<<endl; 
      }
     ofs2<<ifs.rdbuf(); 

    ifs.close();
    ofs1.close();
    ofs2.close();
    cout<<"copied two file！"; 
    cin.get();
     return 0; 
} 

I want to make a copy.exe same like dos cmd copy.

but as you can see .it doesn't work well.can you give me some advice?

[Zhuge]

Does it even compile? It seems like you haven't declared ofs, at least. Could you be more specific about your problem besides "it doesn't work well"?

[CallToPower]

You don't have an include for exit (http://cplusplus.com/reference/clibrary/cstdlib/exit/),
you declare the output files ofs1 and ofs2 (without a check) but call "outfile" (which is not declared) as your output file.
It can't compile...

[ne555]

If you want to copy an archive, you better treat it as binary (using read and write), because you can't be sure that exists a \n

What is the purpose of this?
outfile<<infile.rdbuf();

[peripheral]

hello ，friends

I have edit some mistakes.

now.it can compile.

but it can only output Either a copy.htm Or a copy.txt.

never Both!!!

if I cut "ofs2<<ifs.rdbuf(); "of line 19 to line 31

ofs2 will be disabled,i.e copy.txt will be create.

[Zhuge]

What? You mean it isn't creating both files or something?

[peripheral]

yes，it can only creating one file at a time.

if you exchange the position of code line 19 and line 31.

[ne555]

f you have writing permission both files should be created by the constructors (empty)

ofs2<<ifs.rdbuf(); //I think you're moving the pointer
// ifs.tellg() != 0
ifs.seekg(0, ios::beg); //going back to the start of the file 

[peripheral]

yes ，youare right.thank you.

but.do you notice that the copy.htm? is continous .there is no new line.but the copy.txt is correct.