fis*_*mit 0 c linked-list undeclared-identifier
我正在尝试在C中实现一个链表,我很难搞清楚为什么我在编译时遇到以下错误:
entryList.c:7:11: error: 'tmp' undeclared (first use in this function)
entry * tmp = NULL;
entryList.c:7:11: note: each undeclared identifier is reported only once for
each function it appears in
^
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我已经为这个程序写了一些链表,它们都使用了类似的语法,但编译器只抱怨这个.
我在header.h中有我的结构定义:
/*definition of entry type*/
typedef struct entry
{
char * label;
short int address;
struct entry * next;
} entry;
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在entryList.c中,我正在编写一个函数来将一个节点添加到链表中.
#include "header.h"
static entry * head = NULL;
void addEntry(char * entry, int line)
{
entry * tmp = NULL;
char * label = NULL;
tmp = malloc(sizeof(entry));
label = malloc(sizeof(char)*MAX_LINE);
strcpy(tmp->label, entry);
tmp->address = 0;
tmp->next = NULL;
if (!head)
{
head = tmp;
}
else
{
entry * p = head;
while (p->next)
p = p->next;
p->next = tmp;
}
}
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void addEntry(char * entry, int line)
{
entry * tmp = NULL;
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您有一个参数和一个名为的类型entry.将其中一个更改为其他内容.