CS计算机代考程序代写 // from: http://www.cplusplus.com/doc/oldtutorial/namespaces/
// from: http://www.cplusplus.com/doc/oldtutorial/namespaces/
#include
using namespace std;
namespace first{
int x = 5;
int y = 10;
}
namespace second{
double x = 3.1416;
double y = 2.7183;
}
int main() {
//from now on, x refers to first::x
using first::x;
//from now on, y refers to second::y
using second::y;
cout << x << endl;
cout << y << endl;
cout << first::y << endl;
cout << second::x << endl;
return 0;
}
