// Program that tries to get two float values out of a function set_cons
// This one works, but is usually NOT ALLOWED
//
#include <iostream.h>

float pi, e; // MUST GET PERMISSION FOR A GLOBAL DECLARATION

void set_cons(void)
{
  pi=3.141593;
  e=2.718282;
  cout << "In function set_cons: pi = " << pi << "; e = " << e << endl;
}

void main(void)
{

  pi=0.; // set pi to zero
  e=0.;  // set e  to zero

  cout << "In function main: pi = " << pi << "; e = " << e << endl;

  // We want to set the correct values of pi and e:
  set_cons();    // This is going to work: global scope

  cout << "In function main: pi = " << pi << "; e = " << e << endl;
}