Thread: copy multiple files to a destination file

I have to write a program that emulates the Unix cat command. The program accepts between 2 to 9 files from dos command line.
eg concat file 1 file 2 file3 ...... // concat being the name of my program....files 2 and 3 will be copied to file 1 in that order..... I have written a program that allows for 3 arguments.... copying the second into the first...how would i go about changing it to allow for multiply files..........this is the code I have

Code:

#include <fstream.h>	//for I/O files
#include <iostream.h>
using namespace std;
#include <process.h>		//for exit

int main(int argc, char* argv[])
{
	if(argc != 3)
	{
		cerr << "\nFormat: ocopy srcfile destfile";
		exit(-1);
	}

	char ch;
	
	ifstream infile;		//create input file
	infile.open(argv[1]);	//open file

	if(!infile)
	{cerr << "\nCan't open " << argv[1]; exit(-1);}

	ofstream outfile;		//create output file
	outfile.open(argv[2]);	//open output file

	if(!outfile)
	{cerr << "\nCan't open " << argv[2]; exit(-1);}

	while(infile)			//until EOF
	{
		infile.get(ch);		//read a character
		outfile.put(ch);	//write a character
	}

	return 0;
}

any help would be great.....thanks