更改鏈接列表中指針地址的問題

Question

在下面的代碼exerpt中，它給了我警告：對於所提到的兩行，從不兼容的指針類型進行分配。我究竟做錯了什麼？

typedef struct { 
    char* string; 
    struct samplelist* nextchunk; 
    struct samplelist* prevchunk; 
} samplelist; 

samplelist* startsamplelist; 
samplelist* lastsamplelist; 


samplelist* newchunk = checked_malloc(sizeof(samplelist)); 

lastsamplelist->nextchunk = newchunk; //warning here 
newchunk->prevchunk = lastsamplelist; // warning here 
lastsamplelist = newchunk; //no problem here though 

編輯：附上相關定義，下面的答案不依賴代碼補充。是語法錯誤

Answer 1

這裏的問題：你需要後struct

typedef struct samplelist { 
    char* string; 
    struct samplelist* nextchunk; 
    struct samplelist* prevchunk; 
} samplelist; 

一般

的第一行還添加符號samplelist，則可能是：

typedef struct foobar { 
    char* string; 
    struct foobar* nextchunk; 
    struct foobar* prevchunk; 
} samplelist; 

PS：我個人認爲typedef s吸和最好使用非常節省