下列关于结构体初始化的写法，正确的是（ ）。
struct Point { int x, y; }; Point p = (1,2);
struct Point { int x, y; }; Point p = {1,2};
struct Point { int x, y; }; Point p = new Point(1,2);
struct Point { int x, y; }; Point p = <1,2>;