#include
#include
#include
#include
using namespace std;
int main()
{
locale usloc("English_US");
ostringstream ostr;
// Give a new, empty string to ostr.
ostr.str(string());
// construct a table of circular areas.
ostr << setprecision(4) << showpoint << fixed << left;
ostr << "Diameter Area\n";
cout << "A table of circular areas.\n";
for(int i=1; i < 10; ++i)
ostr << left << " " << setw(6) << i << setw(8) << right << i*3.1416 << endl;
cout << ostr.str();
return 0;
}