将结构体typedef为数组

https://blog.csdn.net/qq_44844115/article/details/106099244

typedef struct _s
{
    int a = 0;
}s[1];


void func(s input)
{
    input->a++;
}

int main()
{
    s tmp;  // 相当于 _s tmp[1]
    func(tmp);
    cout << tmp->a << endl; // print: 1
}