´óÒ»¼ÆËã»úÉÏ»úÌâÄ¿¼°´ð°¸£¨Î÷µçרÓã©

fscanf(np,\ress); }

void write_file(Linklist head){ //ÎļþÖØÐÂдÈ뺯Êý

Linklist p=head;FILE *np;

if((np=fopen(\

printf(\ }

q->next=NULL;fclose(np); return head;

while(p!=NULL){

fprintf(np,\hone,p->email,p->address); }

void printf_file(){ //ÐÅÏ¢²éѯº¯Êý Linklist p=read_file();system(\ printf_title();

}

p=p->next;

fclose(np);

printf(\±àºÅ\\tÐÕÃû\\tÐÔ±ð\\tµç»°\\t\\temail\\t\\t\\tµØÖ·\\n\

while(p!=NULL){

printf(\->email,p->address); }

void delet_file(){ //ÈËԱɾ³ýº¯Êý int i,n=1;

Linklist head,p=read_file(),q=p;head=p; }

p=p->next;

printf_file();

printf(\ÇëÊäÈëҪɾ³ýµÄÈËÔ±±àºÅ\\n\

while(p!=NULL){ if(i==p->id)

if(n==1) {head=p->next;break;} else break;

q=p;

p=p->next; ++n;

}

q->next=p->next; printf(\ɾ³ý³É¹¦\\n\

write_file(head); }

void add_file(){ //ÈËÔ±Ìí¼Óº¯Êý Linklist head,p=read_file(),q;

head=p;

printf_file();

printf(\ÊäÈëÒªÌí¼ÓµÄÈËÔ±µÄÐÅÏ¢\\n\ q=(Listnode*)malloc(sizeof(Listnode));

scanf(\>address); while(1){

if(p->next!=NULL)p=p->next; else {p->next=q;break;}

}

q->next=NULL; printf(\Ìí¼Ó³É¹¦\\n\

write_file(head); }

void modify_file(){

Linklist head,p=read_file(),q,f;

int i;

head=p;

printf_file();

printf(\ÊäÈëÒªÐ޸ĵÄÈËÔ±µÄ±àºÅ\\n\ scanf(\

while((i!=p->id)&&p!=NULL){

f=p;p=p->next;}

printf(\ÊäÈëÐ޸ĺóµÄÐÅÏ¢\\n\ q=(Listnode*)malloc(sizeof(Listnode));

scanf(\>address);

if(i==head->id){head=q;q->next=p->next;} } int main(){ int a; while(a!=1) a=select_menu(); printf(\Í˳ö³É¹¦\\n\ else{f->next=q;q->next=p->next;} printf(\Ð޸ijɹ¦\\n\ write_file(head);

return 0;