如何讓這個結構在C中工作？

Question

我一直在試圖學習在C中的結構，並無法弄清楚如何使這個代碼工作。我不斷收到此錯誤：

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

^ 
test.c:2:8: 

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

代碼：

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

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

} 

Answer 1

首先，您需要定義結構：

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

然後你就可以將它聲明：

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