#include <iostream>
#include <iomanip>

using namespace std;

double x = 0.5,

fun(void);

int main()

{

while( x < 10.0 )

{

x += fun();

cout << " Within main(): "

<< setw(5) << x << endl;

}

return 0;

}

double fun()

{

static double x = 0;

cout << " Within fun():"

<< setw(5) << x++;

return x;

}