An example how to line up your decimal points in a column like output of floating point numbers. Both C and C++ versions are shown. Thanks are given to Bud Tugly, my 77 year old senior student.

// right justified numeric output  (Dev-C++)

#include <cstdlib>
#include <iostream>
#include <cstdio>      // for printf()
#include <iomanip>     // setXXX() functions

using namespace std;

int main()
  double d1 = 30.768;
  double d2 = 1.345;
  double d3 = .430;
  // this works well, the decimal points line up

  // dito, but keep the order of setXXX() functions!!
  cout << setiosflags(ios::fixed);
  cout << setw(8) << setprecision(3) << d1 << endl;
  cout << setw(8) << setprecision(3) << d2 << endl; 
  cout << setw(8) << setprecision(3) << d3 << endl << endl; 
  return EXIT_SUCCESS;

Bud is convinced that programming keeps his brain sharp and keeps Alzheimer's away!