Malloc函數顯示錯誤

Question

`struct node * createLL(struct node *head) 
{ 
int num; 
struct node *new_node; 
printf("enter the numbers you want to insert:\n"); 
printf("enter -1 to quit"); 
scanf("%d",&num); 
while(num!=-1) 
{ 
new_node=(struct node *) malloc (sizeof(struct node *)); 
new_node->data=num; 
if(head==NULL) 
{ 
new_node->next=NULL; 
head=new_node; 
} 
else 
{ 
new_node->next=head; 
head=new_node; 
} 
printf("enter the numbers you want to insert:\n"); 
printf("enter -1 to quit"); 
scanf("%d",&num); 
} 
return head; 
}` 

用於爲類型struct node *的鏈接列表創建new_node的malloc顯示錯誤。它說「malloc沒有在範圍內聲明」.. 我也提到了書籍..代碼是一樣的..無法弄清楚如何糾正錯誤 。

Answer 1

您確定在標題中包含正確的庫嗎？請確保您已經

#include <stdlib.h>