下列代码中，输出结果是（ ）。

#include <iostream>
using namespace std;
int func(int x, int y)
{
    int a = x, b = y;
    int t;
    t = a;
    a = b;
    b = t;
    cout << a << " " << b << " ";
}
int main()
{
    int c, d;
    c = 12;
    d = 24;
    func(12, 24);
    cout << c << " " << d << endl;
}

{{ select(1) }}

• 12 24 24 12
• 24 12 12 24
• 12 12 24 24
• 24 24 12 12