411 REFERENCE · Wikibooks
C++ Programming/Scope/Examples/Program Namespaces
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// Namespaces Program, an example to illustrate the use of namespaces
#include <iostream>
namespace first {
int first1;
int x;
}
namespace second {
int second1;
int x;
}
namespace first {
int first2;
}
int main(){
//first1 = 1;
first::first1 = 1;
using namespace first;
first1 = 1;
x = 1;
second::x = 1;
using namespace second;
//x = 1;
first::x = 1;
second::x = 1;
first2 = 1;
//cout << 'X';
std::cout << 'X';
using namespace std;
cout << 'X';
return 0;
}