수다닷컴

#include stdio.h
#include malloc.h
#include string.h
int add_list(char *name, char *tel, char *addr);
void print_list(void);
void remove_list(void);

typedef struct tagLinkedList
{
char name[30];
char tel[30];
char addr[100];

struct tagLinkedList *next;
}ADDR;

ADDR *g_pAddrhead =NULL;

void main(void)
{
add_list(홍길동,1111,서울특별시);
add_list(홍길순,1611,그냥그냥시);
add_list(홍길목,1511,부산광역시);
add_list(홍길더,1311,인천광역시);
print_list();
remove_list();
}
int add_list(char *name, char *tel, char *addr)
{
ADDR *plocal,*pn = g_pAddrhead;
if(g_pAddrhead==NULL)// 이 부분에서 데이터를 추가되는것이라는데..이해가안가네요 ㅠㅠ
{
g_pAddrhead = malloc(sizeof(ADDR));
if(g_pAddrhead ==NULL)
{
return 0;
}
g_pAddrhead-next = NULL;
plocal = g_pAddrhead;
}
else
{
plocal = malloc(sizeof(ADDR));
if(plocal == NULL)
{return 0;
}
while(pn-next)
{
pn = pn-next;
}
pn-next = plocal;
plocal-next = NULL;
}
strcpy(plocal-name,name);
strcpy(plocal-tel,tel);
strcpy(plocal-addr,addr);
return 1;
}
void print_list(void)
{
int count = 1;
ADDR *plist;
plist = g_pAddrhead;
while(plist)
{
printf(no.%d\n, count++);
puts(plist-name);
puts(plist-tel);
printf(%s\n\n,plist-addr);
plist = plist-next;
}
}
void remove_list(void)
{
ADDR *plocal;
while(g_pAddrhead)
{
plocal = g_pAddrhead-next;
free(g_pAddrhead);
g_pAddrhead = plocal;
}
}

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