Malloc函数显示错误

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; 
}` 

用于为类型struct node *的链接列表创建new_node的malloc显示错误。它说“malloc没有在范围内声明”.. 我也提到了书籍..代码是一样的..无法弄清楚如何纠正错误 。

Answer 1

您确定在标题中包含正确的库吗？请确保您已经

#include <stdlib.h>