用C语言写的一个控制台界面的通讯录管理系统
说明
RT, 用C写的, 帮别人做的作业~
主要是用链表实现了基本的插入, 删除, 修改, 访问, 遍历, 保存, 读取等的操作
以命令的方式操作~
话说还是我第一次写这类东西, 很不情愿的说, 都已经帮别人做了好几次的作业了
写了近400行代码, 容错能力还是不是很差, 可以用, 可以交差~
截图
命令后面的中括号内是该命令需要的参数~
源代码（3个文件）
分三个文件:
contact.c:主程序
list.c/list.h:链表的操作
contact.c
#include <stdio.h>
#include <stdlib.h>
#include "list.h"
void show_help(void)
{
printf(
"**********************\n"
"欢迎使用通讯录管理系统\n"
"**********************\n\n"
"请选择操作命令:\n"
" h\t\t 查看此帮助信息\n"
" v\t\t 查看所有联系人信息\n"
" s\t\t 保存更新联系人信息到文件\n"
" u\t\t 从文件中加载联系人信息\n"
" n [姓名]\t 查询姓名对应的电话\n"
" e [姓名]\t 修改指定联系人\n"
" d [姓名]\t 删除指定联系人\n"
" t [电话]\t 查询电话对应的姓名\n"
" a [姓名] [电话] 新增联系人信息\n"
" q\t\t 退出程序\n"
"\n说明:\n"
"\t第1次操作前请先执行命令 u 加载联系人信息\n"
"\t退出前记得执行命令 s 保存联系人信息到文件\n"
);
}
void do_cmd(void)
{
char cmd[32];
contact* pc = NULL;
if(!list_create(&pc)) return;
for(;;){
char* pch = NULL;
printf("命令>");
fflush(stdin);
fgets(cmd, sizeof(cmd), stdin);
if(*cmd == '\n')
continue;
else if(*cmd == 'q')
break;
pch = strchr(cmd, '\n');
if(pch) *pch = 0;
if(cmd[1] && cmd[1]!=0x20) *cmd = 0;
switch(*cmd)
{
case 'u':list_load(pc);break;
case 's':list_save(pc);break;
case 'v':list_view_all(pc);break;
case 'h':show_help();break;
case 'n':
case 'e':
case 'd':
case 't':
case 'a':
{
pch = cmd+1;
while(*pch == 0x20 || *pch == '\t')
pch++;
if(!*pch){
printf("命令 %c 缺少参数!\n", *cmd);
break;
}
if (*cmd == 'n') list_view_name(pc, pch);
else if(*cmd == 'e') list_edit(pc, pch);
else if(*cmd == 'd') list_delete(pc, pch);
else if(*cmd == 't') list_view_tel(pc, pch);
else if(*cmd == 'a'){
//pch -> name
char* tel = NULL;
for(tel=pch; *tel && *tel!=0x20 && *tel!='\t'; tel++)
;
if(*tel) *tel = 0;
tel++;
while(*tel && (*tel==0x20||*tel=='\t'))
tel++;
if(!*tel){
printf("没有电话号码, 参数不足!\n");
break;
}
list_add(pc, pch, tel);
}
break;
}//case
default:
printf("未知命令!\n");
break;
}//switch
}//for
list_free(&pc);
return;
}
int main(void)
{
show_help();
do_cmd();
return 0;
}
list.h
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
typedef struct _contact{
char name[16];
char tel[12];
struct _contact* next;
}contact;
int list_load(contact* phead);
void list_save(contact* pContact);
void list_edit(contact* pContact, char* name);
void list_delete(contact* pContact, char* name);
void list_view_tel(contact* pContact, char* tel);
void list_view_name(contact* pContact, char* name);
void list_view_all(contact* pContact);
int list_create(contact** ppContact);
void list_free(contact** pp);
void list_add(contact* p, char* name, char* tel);
list.c
#include "list.h"
int list_create(contact** ppContact)
{
contact* p = NULL;
p = (contact*)malloc(sizeof(contact));
if(!p){
perror("内存分配错误");
*ppContact = NULL;
return 0;
}
memset(p, 0, sizeof(contact));
*ppContact = p;
return 1;
}
void list_view_all(contact* pContact)
{
if(!pContact) return;
pContact = pContact->next;
while(pContact){
printf(
"姓名:%s\n"
"电话:%s\n"
"\n",
pContact->name,
pContact->tel
);
pContact = pContact->next;
}
}
void list_view_name(contact* pContact, char* name)
{
if(!pContact) return;
pContact = pContact->next;
while(pContact){
if(!strcmp(pContact->name, name)){
printf(
"姓名:%s\n"
"电话:%s\n"
"\n",
pContact->name,
pContact->tel
);
break;
}
pContact = pContact->next;
}
if(!pContact){
printf("没有找到该联系人!\n");
}
}
void list_view_tel(contact* pContact, char* tel)
{
char* pch = NULL;
if(!pContact) return;
pContact = pContact->next;
for(pch=tel; *pch; pch++){
if(!isdigit(*pch)){
printf("电话号码格式不正确!\n");
return;
}
if(*pch==0x20){
*pch = 0;
break;
}
}
while(pContact){
if(!strcmp(pContact->tel, tel)){
printf(
"姓名:%s\n"
"电话:%s\n"
"\n",
pContact->name,
pContact->tel
);
break;
}
pContact = pContact->next;
}
if(!pContact){
printf("无此电话号码!\n");
}
}
void list_delete(contact* pContact, char* name)
{
contact* last = NULL;
if(!pContact) return;
last = pContact;
for(; pContact && strcmp(pContact->name, name);){
last = pContact;
pContact = pContact->next;
}
if(!pContact){
printf("没有此联系人:%s\n", name);
return;
}else{
last->next = pContact->next;
free(pContact);
printf("已删除联系人:%s\n", name);
return;
}
}
void list_edit(contact* pContact, char* name)
{
if(!pContact) return;
pContact = pContact->next;
while(pContact && strcmp(pContact->name, name))
pContact = pContact->next;
if(!pContact){
printf("没有此联系人:%s\n", name);
return;
}else{
char* pch = NULL;
contact dummy;
dummy.next = NULL;
for(;;){
printf("新姓名:");
fflush(stdin);
fgets(pContact->name, sizeof(dummy.name), stdin);
if(*pContact->name != '\n'){
pch = strchr(pContact->name, '\n');
if(pch) *pch = 0;
break;
}else{
continue;
}
}
for(;;){
printf("新电话:");
fflush(stdin);
fgets(pContact->tel, sizeof(dummy.tel), stdin);
if(*pContact->tel == '\n'){
continue;
}else{
for(pch=pContact->tel; *pch; pch++){
if(!isdigit(*pch)){
printf("联系人电话无效:%s\n", pContact->tel);
break;
}
}
if(!*pch) break;
else continue;
}
}
printf("修改成功!\n");
return;
}
}
void list_save(contact* pContact)
{
FILE* fp = NULL;
if(!pContact || ( pContact&&!pContact->next)){
printf("没有数据需要保存!\n");
return;
}
fp = fopen("contact.dat", "wb");
if(!fp){
perror("无法保存通讯录");
return;
}
pContact = pContact->next;
while(pContact){
fwrite(pContact, 1, sizeof(contact), fp);
pContact = pContact->next;
}
printf("所有联系人信息均已保存更新!\n");
fclose(fp);
return;
}
void list_add(contact* p, char* name, char* tel)
{
contact dummy;
char* pch = NULL;
dummy.next = NULL;
if(!p) list_create(&p);
if(!p) return;
while(p->next)
p = p->next;
list_create(&p->next);
if(!p->next) return;
strncpy(p->next->name, name, sizeof(dummy.name));
for(pch=tel; *pch; pch++){
if(!isdigit(*pch)){
printf("电话号码格式不正确!\n");
break;
}
}
if(*pch){
free(p->next);
p->next = NULL;
return;
}
strncpy(p->next->tel, tel, sizeof(dummy.tel));
printf(
"新增联系人:\n"
" 姓名:%s\n"
" 电话:%s\n",
p->next->name, p->next->tel
);
p->next->next = NULL;
return;
}
int list_load(contact* phead)
{
FILE* fp = NULL;
size_t file_size = 0;
int count = 0;
contact dummy = {0};
if(!phead){
printf("请先初始化!\n");
return 0;
}
if(phead->next){
printf("请不要重复初始化/加载文件!\n");
return 0;
}
fp = fopen("contact.dat", "rb");
if(!fp){
if(errno == ENOENT){
printf("没有找到任何联系人信息!\n");
phead->next = NULL;
return 1;
}else{
perror("读取联系人信息时错误");
return 0;
}
}
fseek(fp, 0, SEEK_END);
file_size = ftell(fp);
if(file_size%sizeof(contact)){
printf("通讯录文件格式不正确!\n");
fclose(fp);
return 0;
}
rewind(fp);
while(fread(&dummy, 1, sizeof(dummy), fp) == sizeof(dummy)){
phead->next = (contact*)malloc(sizeof(contact));
if(!phead->next){
perror("分配内存出错");
continue;
}
memcpy(phead->next, &dummy, sizeof(contact));
phead->next->name[sizeof(dummy.name)-1] = 0;
phead->next->tel[sizeof(dummy.tel)-1] = 0;
phead = phead->next;
phead->next = NULL;
++count;
}
fclose(fp);
printf("共找到 %d 条联系人信息!\n\n", count);
return 1;
}
void list_free(contact** pp)
{
contact* q = NULL;
contact* p = *pp;
while(p){
q = p->next;
free(p);
p = q;
}
*pp = NULL;
return;
}