c++使用新类初始化2d向量；默认值更改

#include <iostream>
#include <vector>

class Point {
public:
    int x;
    int y;

    // 构造函数
    Point(int xVal = 0, int yVal = 0) : x(xVal), y(yVal) {}
};

int main() {
    // 使用新类初始化2D向量
    std::vector<std::vector<Point>> points = {
        {Point(1, 2), Point(3, 4)},
        {Point(5, 6), Point(7, 8)}
    };

    // 输出向量中的点的坐标
    for (const auto& row : points) {
        for (const auto& point : row) {
            std::cout << "(" << point.x << ", " << point.y << ") ";
        }
        std::cout << std::endl;
    }

    return 0;
}