#include <iostream>
#include <fstream>
#include <iomanip>

int main() {
	  int n=10;
	  std::cout << std::hex << n << std::endl;
      std::cout << std::dec << n << std::endl;
      std::cout.operator<<(std::dec).operator<<(n).operator<<(std::endl);

      std::ofstream output("square.txt", std::ios::out);
	  output<<" N | Square"<<std::endl;
	  output<<"------------"<<std::endl;
	  for (int i=1; i<=n; i++) {
          output << i;
          output << i*i;
          /*
	      output << std::setfill(' ');
	      output << std::setw(2) << i;
	      output << std::setw(5) << i*i;
          */
	      output << std::endl;
	  }
	  output.close();
	return 0;
}