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我试图在C语言中声明它，但结果是一个错误。有什么误会吗？

错误

poker_comp.c: In function ‘newdeck’:
poker_comp.c:40:15: warning: assignment to ‘Card *’ {aka ‘struct card *’} from incompatible pointer type ‘Card *’ {aka ‘struct card *’} [-Wincompatible-pointer-types]
   40 |     deck->top = newcard(p,s);
      |               ^
poker_comp.c:41:12: warning: assignment to ‘Card ’ {aka ‘struct card *’} from incompatible pointer type ‘Card *’ {aka ‘struct card **’} [-Wincompatible-pointer-types]
   41 |     cursor = deck->top;
      |            ^

代码

typedef enum boolean {false, true} flipped;`
typedef struct card{
    int pips;
    char suit;
    bool flipped;
    int *nextCard;
}Card;

typedef struct deck{
    struct card[52];
    Card **cards;
}Deck;

typedef struct player{
    char name;
    int *c1, *c2;
    int acc;
}Player;