无法转换为指针类型，转换结构

Question

将结构转换为指针时出现“无法转换为指针类型”错误。

我试图将 ObjectExtended 类型的结构转换为 ObjectBase 的指针，ObjectExtended 的第一个成员是指向 ObjectBase 的指针，因此它应该可以工作。

代码如下:

typedef struct ObjectBase
{
    int integer1;
    int integer2;
}ObjectBase;

typedef struct ObjectExtended
{
    ObjectBase* baseObj;
    char* string;
}ObjectExtended;

int main(int argc,char** argv)
{
    ObjectExtended* objExtended = malloc(sizeof(ObjectExtended));
    objExtended->string = "TEST_OBJECT";

    objExtended->baseObj = malloc(sizeof(ObjectBase));
    objExtended->baseObj->integer1 = 10;
    objExtended->baseObj->integer2 = 11;

    printf("Extended Object:\n");
    printf("\tString: %s\n",objExtended->string);
    printf("\tInt1: %i\n",objExtended->baseObj->integer1);
    printf("\tInt2: %i\n",objExtended->baseObj->integer2);

    ObjectBase* objBase = (ObjectBase*)(*objExtended);
    printf("Base Object:\n");
    printf("\tInt1: %i\n",objBase->integer1);
    printf("\tInt2: %i\n",objBase->integer2);

    free(objExtended->baseObj);
    free(objExtended);
    return 0;
}

Answer 1

    ObjectBase* objBase = (ObjectBase*)(*objExtended);

应该是

    ObjectBase* objBase = (ObjectBase*)objExtended;

我觉得。您不需要取消引用 objExtended。