#include <iostream>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>

using namespace std;

int main(int argc, char * argv[]) {
    bool newInput = false;
    string inputFileName;
    bool newOutput = false;
    string outputFileName;


    string data;

    int i;

    i = 1;
    while (i < argc) {
       if (strcmp(argv[i],"-i") == 0) {
          i++;
	  if (i < argc) {
	      newInput = true;
	      inputFileName = argv[i];
	      i++;
	  }
       } else if (strcmp(argv[i],"-o") == 0) {
          i++;
	  if (i < argc) {
	      newOutput = true;
	      outputFileName = argv[i];
	      i++;
	  }
       } else {
           cout << "Argument error " << endl;
       }
    }

    if (newInput) {
       close(0);
       open(inputFileName.c_str(),O_RDONLY);
    }

    if (newOutput) {
       close(1);
       open(outputFileName.c_str(),O_WRONLY|O_CREAT|O_TRUNC,S_IRUSR|S_IWUSR );
    }

    getline(cin, data);
    while(cin) {
        cout << data << endl;
        getline(cin, data);

    }

    return 0;
}