[C++之旅] 1 namespace

[C++之旅] 1 namespace

#include <iostream>

using std::cout;
using std::endl;

namespace part_a
{
    int apples = 10;
    void put_apple()
    {
        cout << "The part_a has "
            << apples
            << " apples."
            << endl;
    }
}

namespace part_b
{
    int apples = 5;
    void put_apple()
    {
        cout << "The part_b has "
            << apples
            << " apples."
            << endl;
    }
}

int main()
{
    using namespace part_b;
    part_a::apples = 200;
    part_a::put_apple();
    put_apple();

    system("pause");
    return 0;
}