C语言大作业 - 学生通讯录管理系统

#include #include //#define NULL 0

#define LEN sizeof(struct message)

struct message //定义结构体 {

char name[15]; char number[15]; char phone[15]; char qq[13]; char addr[25];

struct message *next; //指向下一数据 };

int n;

void creat() //建立电话簿 {

int num; char choice[5]={'2'}; FILE *fp;

struct message *head; struct message *p,*q; n = 0;

p = q = (struct message *) malloc(LEN);

fp=fopen(\通讯录1.txt\ system(\

printf(\请输入姓名:\ scanf(\

printf(\请输入电话号码:\ scanf(\ printf(\请输入学号:\ scanf(\ printf(\请输入QQ:\ scanf(\

printf(\请输入住址:\ scanf(\ fwrite(p,LEN,1,fp); fclose(fp);

head = 0; num = 1;

while(num!=0) {

n = n+1;

if(n==1) head = p; else q->next = p; q = p;

p = (struct message *) malloc(LEN); //分配存储区

while(choice[0]!='1' && choice[0]!='0') //判断是否继续 {

printf(\继续输入\\n 0 返回\\n\ printf(\请选择操作：\ scanf(\ }

switch(choice[0]) {

case '1': {

fp=fopen(\通讯录1.txt\ system(\

printf(\请输入姓名:\ scanf(\

printf(\请输入电话号码:\ scanf(\ printf(\请输入学号:\ scanf(\ printf(\请输入QQ:\ scanf(\

printf(\请输入住址:\ scanf(\ fwrite(p,LEN,1,fp); fclose(fp); choice[0] = '2'; } continue; case '0': num = 0;

system(\ } }

q->next = 0; }

void add() //添加通讯录 {

int num; char choice[5]={'2'}; FILE *fp;

struct message *head; struct message *p,*q; n = 0;

p = q = (struct message *) malloc(LEN);

fp=fopen(\通讯录1.txt\ system(\

printf(\请输入姓名:\ scanf(\

printf(\请输入电话号码:\ scanf(\ printf(\请输入学号:\ scanf(\ printf(\请输入QQ:\ scanf(\

printf(\请输入住址:\ scanf(\ fwrite(p,LEN,1,fp); fclose(fp);

head = 0; num = 1;

while(num!=0) {

n = n+1;

if(n==1) head = p; else q->next = p; q = p;

p = (struct message *) malloc(LEN);

while(choice[0]!='1' && choice[0]!='0') 否继续

{

printf(\继续输入\\n 0 返回\\n\ printf(\请选择操作：\ scanf(\ }

//分配空间 //输入内容 //分配空间 //判断是

switch(choice[0]) {

case '1': {

fp=fopen(\通讯录1.txt\ system(\

printf(\请输入姓名:\ scanf(\

printf(\请输入电话号码:\ scanf(\ printf(\请输入学号:\ scanf(\ printf(\请输入QQ:\ scanf(\

printf(\请输入住址:\ scanf(\ fwrite(p,LEN,1,fp); fclose(fp); choice[0] = '2'; } continue; case '0': num = 0;

system(\ } }

q->next = 0; }

void findname(struct message * fphead) {

struct message *p; int a = 0;

char findname[20];

system(\

printf(\请输入要查找的姓名：\\n\ scanf(\

for(p=fphead->next;p!=NULL;p=p->next) {

if(strcmp(p->name,findname)==0) {

//按姓名查找 printf(\姓名 电话号码 学号 QQ 住址\\n\

printf(\ a = 1; } }

if(a != 1)

printf(\无此通讯录！\\n\ }

void findphone(struct message * fphead) //按电话查找 {

struct message *p; int a = 0;

char findphone[15];

system(\

printf(\请输入要查找的电话：\\n\ scanf(\

for(p=fphead->next;p!=NULL;p=p->next) {

if(strcmp(p->phone,findphone)==0) {

printf(\姓名 电话号码 学号 住址\\n\

printf(\ a = 1; } }

if(a != 1)

printf(\无此通讯录！\\n\ }

void findnumber(struct message * fphead) //按学号查找 {

struct message *p; int a = 0;

char findnumber[15];

system(\

QQ

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