#include <iostream>
struct Point {
    int x;
    int y;
};

int main()
{
    Point p1 = { 25,25 };
    printf("p1.x address:%d\r\n", &p1.x);
    printf("p1 address:%d\r\n", &p1);
    Point& p2 = p1;
    printf("p2.x address:%d\r\n", &p2.x);
    printf("p2 address:%d\r\n", &p2);
    printf("p1和p2地址相同，说明p2起到了别名的作用。p2.x和p2地址相同，说明p2保存的是内容，而不是地址。\r\n");
    std::system("pause");
    return 0;
}

struct Point {
    x: i64,
    y: i64,
}

fn main() {
    let p1 = Point { x: 25, y: 25 };
    println!("p1.x address: {:p}", &p1.x);
    println!("p1 address: {:p}", &p1);
    let p2: &Point = &p1;
    println!("p2.x address: {:p}", &p2.x);
    println!("p2 address: {:p}", &p2);
    println!("p1和p2地址不同，说明p2不是p1的别名。p2.x和p2地址不同，说明p2是指针。");
}