如何使这个结构在C中工作？

Question

我一直在尝试用C学习结构，但无法弄清楚如何使这段代码工作。我一直收到这个错误：

incomplete type 'struct card' struct card aCard = {"Three", "Hearts"};

^
test.c:2:8: 

note: forward declaration of
      'struct card'
struct card aCard = {"Three", "Hearts"}; 

代码：

#include<stdio.h>
struct card aCard = {"Three", "Hearts"};

int main(void){
printf("%s", aCard.suit);

}

Answer 1

首先，您需要定义结构：

struct card {
   char  type[4];
   int  value;
};

然后你可以声明它：

struct card card1; /*Declaration card1 of type card*/