c - 从不同结构类型中的指针向结构指针赋值

Question

我目前正在尝试将指针分配给一个名为 totheright 的结构(这是一个链表节点)。指向结构/列表的指针当前位于另一个称为矩形的结构中。我在尝试这样做时遇到错误。

currect->right = malloc(sizeof(totheright));
righthead = current->right;

以下是函数中的声明:

rect *currect = NULL;
totheright *righthead = NULL;

标题中的结构定义:

typedef struct _totheright {
    int rect;
    struct _totheright *right;
} totheright;

typedef struct _rect {
    int thisrect;
    struct totheright *right;
    int left;
    double width;
    double height;
    double xcord;
    double ycord;
    struct _rect *next;
} rect;

Answer 1

字段 right在结构中rect不应该有 struct之前 totheright或 struct _totheright应该使用:

typedef struct _rect {
    int thisrect;
    //struct totheright *right; // was
    totheright *right; // fixed
    //struct _totheright *right; // that would be ok as well
    int left;
    double width;
    double height;
    double xcord;
    double ycord;
    struct _rect *next;
} rect;