#include <iostream>
#include <stdio.h> // for printf() below

using namespace std;

int main()
{
  void format_print(int a);
  void format_print(double a);
  int a = 42;
  double b = 3.1415926;
  format_print(a);
  format_print(b);
  return 0;
}

void format_print(int a)
{
  printf("%4d\n", a);  // print an integer within 4 spaces
}

void format_print(double a)
{
  printf("%4.2lf\n", a); // print a double within 4 spaces, 
                         // and 2 digits after the decimal
}