#include <fstream.h>

void main(int argc, char *argv[]) 
{
	if(argc != 4) {
		cerr << "Usage: " << argv[0] <<
			" file1 file2 output" << endl;
		
		return;
	}
	
	ifstream a(argv[1]), b(argv[2]);
	ofstream out(argv[3]);
	char	buffer[128];
	
	while(a || b) {
		if(a && a.getline(buffer,128)) {
			out << buffer << endl;
		}
		
		if(b && b.getline(buffer,128)) {
			out << buffer << endl;
		}
	}
}