/* sample program functions and diagnostic outputs*/
#include <iostream>
int f(double x)
{  cout << "  f(" << x << ")\n";
   cout << "       x=" << x << "\n";
   return x*x;
}
int g(int x)
{  cout << "  g(" << x << ")\n";
   cout << "       x=" << x << "\n";
   return 2*x;
}
int main()
{  cout << "main()\n";
   int a = 1;
   cout << "  a=" << a << "\n";
   a = g(a);
   cout << "  a=" << a << "\n";
   a = f(a);
   cout << "  a=" << a << "\n";
   return 0;
}