C ++从双指针获取数据

Question

我是C ++领域的新手，面对双重指针。问题是如何在函数x=5中设置test？

#include <iostream>
using namespace std;

typedef struct _DoublePointer
{
    int x;
    int y;
} DoublePointer;

void test(_DoublePointer** pointer)
{

}

void main()
{
    _DoublePointer* pointer = new _DoublePointer;
    _DoublePointer** doublePointer = &pointer;
    test(doublePointer);
}

Answer 1

做到这一点的方式是

(*pointer)->x = 5;