Turn on showpos, use left-justification : cout justification « Development « C++ Tutorial

1. C++ Tutorial
2. Development
3. cout justification

#include <iostream>
using namespace std;

int main()
{
  // Use default width.
  cout << "Default format.\n";
  cout << "|";
  cout << 123.45 << "|" << "\n\n";

  // Turn on showpos, use left-justification.
  cout << "Turning on showpos flag.\n";
  cout.setf(ios::showpos);
  cout << "Left-justify set in a field width of 12 again.\n";
  cout << "|";
  cout.width(12);
  cout << 123.45 << "|" << "\n\n";

  return 0;
}