C语言通讯录管理系统

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实现了通讯录的录入信息、保存信息、插入、删除、排序、查找、单个显示等功能。。

完整的代码如下：

 

#include #include   //得到指向大小为Size的内存区域的首字节的指针//#include #include   //标准库函数// #define NULL 0#define LEN sizeof(struct address_list)  //计算字节//int n;struct address_list{ char name[30];     //名字 char work[30];     //职业 char handset[30];  //手机 char email[30];    //电子邮件 char address[30];  //通讯地址 struct address_list *next;};struct address_list *shifang(struct address_list *head); // 释放内存函数声明//创建函数，不带头结点的链表struct address_list *creat(void)       { struct address_list *head,*p1,*p2; char name[20]; n=0; p1=(struct address_list *)malloc(LEN); p2=p1;   //强制内存转换 printf("请输入通讯录的内容!\n姓名输入为0时表示创建完毕!\n"); printf("请输入姓名:"); gets(name); if(strcmp(name,"0")!=0) {  strcpy(p1->name,name);  printf("请输入职业:");     gets(p1->work);  printf("请输入手机:");     gets(p1->handset);  printf("请输入电子邮件:"); gets(p1->email);  printf("请输入通讯地址:");  gets(p1->address);  head=NULL;  while(1)  {   n=n+1;   //记录通讯录人数个数   if(n==1)    head=p1;   else    p2->next=p1;   p2=p1;   printf("请输入姓名:");   gets(name);   if(strcmp(name,"0")==0)   {    break;   }   else   {    p1=(struct address_list *)malloc(LEN);    strcpy(p1->name,name);    printf("请输入职业:"); gets(p1->work);    printf("请输入手机:"); gets(p1->handset);    printf("请输入电子邮件:"); gets(p1->email);    printf("请输入通讯地址:");  gets(p1->address);   }  }  p2->next=NULL;  return head; } else  return 0;}//输出函数void print(struct address_list *head)   { struct address_list *p; if(head!=NULL) {  p=head;  printf("本通讯录现在共有%d人:\n",n);  printf("---姓名-------职业--------手机-------Email-------通讯地址\n");  printf("==================================\n");  do  {   printf("== %s",p->name); printf("       ");   printf("%s",p->work); printf("       ");   printf("%s",p->handset); printf("       ");   printf("%s",p->email); printf("       ");   printf("%s",p->address); printf("       \n");   p=p->next;  }while(p!=NULL);  printf("==================================\n"); } else  printf("通讯录为空,无法输出!\n");}//增加函数struct address_list *insert(struct address_list *head) { struct address_list *p0,*p1,*p2; char name[20]; p1=head; printf("请输入增加的内容:\n"); printf("请输入姓名:"); gets(name); if(strcmp(name,"0")==0) {  printf("姓名不能为0,增加失败!\n");  return(head); } else {  p0=(struct address_list *)malloc(LEN);  strcpy(p0->name,name);  printf("请输入职业:"); gets(p0->work);  printf("请输入手机:"); gets(p0->handset);  printf("请输入电子邮件:"); gets(p0->email);  printf("请输入通讯地址:");  gets(p0->address);  n=n+1;  if(head==NULL)  {   head=p0;   p0->next=NULL;   return head;  }  else  {   while(strcmp(p0->name,p1->name)>0&&(p1->next!=NULL))   {    p2=p1;    p1=p1->next;   }   if(strcmp(p0->name,p1->name)<0 || strcmp(p0->name,p1->name)==0)   {    if(head==p1)    {     head=p0;    }    else    {     p2->next=p0;    }    p0->next=p1;   }   else   {    p1->next=p0;    p0->next=NULL;   }   return head;  } }}struct address_list* delete_txl(struct address_list *head){ struct address_list *p,*q; char name[30]; if(head==NULL) {  printf("通讯录为空,无法显示!\n");  return head; } p=head; printf("请输入需要删除的人的姓名:"); gets(name); if(strcmp(head->name,name)==0) {  head=head->next;  free(p);  printf("删除操作成功！\n");  return head; } else {  q=head,p=head->next;  while(p!=NULL)  {   if(strcmp(p->name,name)==0)   {    q->next=p->next;    free(p);    printf("删除操作成功！\n");    return head;   }   p=p->next;   q=q->next;  } }}//显示函数struct address_list *display(struct address_list *head){ struct address_list *p1,*p2; char name[30]; int m; if(head==NULL) {  printf("通讯录为空,无法显示!\n");  return head; } p1=head; m=0; printf("请输入需要显示人的姓名:"); gets(name); while(p1!=NULL) {  while((strcmp(p1->name,name))!=0 && p1->next!=NULL)  {   p2=p1;   p1=p1->next;  }  if(strcmp(p1->name,name)==0)  {   m++;   printf("%s的通讯内容如下:\n",name);   printf("---姓名--------职业--------手机-------Email------通讯地址\n");   printf("==================================\n");   printf("== %s",p1->name);printf("       ");   printf("%s",p1->work);printf("       ");   printf("%s",p1->handset);printf("       ");   printf("%s",p1->email);printf("       ");   printf("%s",p1->address); printf("       \n");   printf("==================================\n");  }  p1=p1->next; } if(m==0) {  printf("此人未在本通讯录中!\n"); } return(head);}//排序函数struct address_list *paixu(struct address_list *head){ struct address_list *p1,*p2; int i,j; struct address_list1 {  char name[30];  char work[30];  char handset[30];  char email[30];  char address[30]; }; struct address_list1 px[200]; struct address_list1 temp; if(head==NULL) {  printf("通讯录为空,无法排序!\n");  return(head); } p1=head; for(i=0;iNULL;i++) {  strcpy(px[i].name,p1->name);  strcpy(px[i].work,p1->work);  strcpy(px[i].handset,p1->handset);  strcpy(px[i].email,p1->email);  strcpy(px[i].address,p1->address);  p2=p1;  p1=p1->next; } head=shifang(head); for(j=0;j-1;j++) {  for(i=j+1;iif(strcmp(px[i].name,px[j].name)<0)   {    temp=px[i];    px[i]=px[j];    px[j]=temp;   }  } } p1=(struct address_list *)malloc(LEN); p2=p1; strcpy(p1->name,px[0].name); strcpy(p1->work,px[0].work); strcpy(p1->handset,px[0].handset); strcpy(p1->email,px[0].email); strcpy(p1->address,px[0].address); head=p1; for(i=1;imalloc(LEN);  strcpy(p1->name,px[i].name);  strcpy(p1->work,px[i].work);  strcpy(p1->handset,px[i].handset);  strcpy(p1->email,px[i].email);  strcpy(p1->address,px[i].address);  p2->next=p1;  p2=p1; } p2->next=NULL; printf("按姓名排序后为:\n"); print(head); return(head);}//姓名查找函数struct address_list *search(struct address_list *head){ struct address_list *p1,*p2; int m; char name[30]; if(head==NULL) {  printf("通讯录为空,无法分类查找!\n");  return(head); } p1=head; printf("********************\n"); printf("**  请输入需要查找的姓名  **\n"); printf("********************\n"); m=0; gets(name); while(p1!=NULL) {  while(strcmp(p1->name,name)!=0&&p1->next!=NULL)  {   p2=p1;   p1=p1->next;  }  if(strcmp(p1->name,name)==0)  {   m++;   printf("你查找的内容是:\n");   printf("+++++++++++++++++++++++++++++++++++\n");   printf("++ %s        %s       %s       %s        %s\n",p1->name,p1->work,p1->handset,p1->email,p1->address);   printf("+++++++++++++++++++++++++++++++++++\n");  }  p1=p1->next;  if(m==0)  {   printf("此人未在本通讯录中!\n");  }  break; } return(head);}//释放内存函数struct address_list *shifang(struct address_list *head){ struct address_list *p1; while(head!=NULL) {  p1=head;  head=head->next;  free(p1); } return(head);}//文件写入函数void save(struct address_list *head){ FILE *fp; struct address_list *p1; char tong[30]; if(head==NULL) {  printf("通讯录为空,无法存储!\n");  return; } printf("请输入保存后的文件名:"); gets(tong); fp=fopen("(tong).txt","w"); if(fp==NULL) {  printf("cannot open file\n");  return; } p1=head; fprintf(fp,"姓名    职业      手机     Email     通讯地址\n"); for(;p1!=NULL;)  {  fprintf(fp,"%s       %s       %s        %s       %s\n",p1->name,p1->work,p1->handset,p1->email,p1->address);  p1=p1->next; } printf("保存完毕!\n"); fclose(fp);}//文件读出函数struct address_list *load(struct address_list *head){ FILE *fp; char tong[30]; struct address_list *p1,*p2; printf("请输入要输出的文件名:"); gets(tong); fp=fopen("(tong).txt","r"); if(fp==NULL) {  printf("此通讯录名不存在,无法输出!\n");  return(head); } else {  head=shifang(head); } p1=(struct address_list *)malloc(LEN); fscanf(fp,"%s%s%s%s%s",&p1->name,&p1->work,&p1->handset,&p1->email,&p1->address); if(feof(fp)!=0) {  printf("文件为空,无法打开!\n");  return(head); } else {  rewind(fp);  p2=p1;  head=p1;  n=0;  while(feof(fp)==0)  {   fscanf(fp,"%s%s%s%s%s",&p1->name,&p1->work,&p1->handset,&p1->email,&p1->address);   if(feof(fp)!=0)    break;   p2->next=p1;   p2=p1;   p1=(struct address_list *)malloc(LEN);   n=n+1;  }  p2->next=NULL;  p1=head;  head=head->next;  n=n-1;  free(p1);  print(head);  printf("打开完毕!\n");  return(head); } fclose(fp);}//综合操作函数struct address_list *menu(struct address_list *head){ char num[10]; while(1) {  printf("*********************\n");  printf("*** 1 姓名查找      ****\n");  printf("*** 2 单个显示      ****\n");  printf("*** 3 增加          ****\n");  printf("*** 4 退出          ****\n");  printf("*********************\n");  printf("请输入您选择的操作:");  gets(num);  switch(*num)  {  case '1':   {    head=search(head);                          //姓名查找    print(head);   }   break;  case '2':   {    head=display(head);                          //显示   }   break;  case '3':   {    head=insert(head);                           //增加    print(head);   }   break;  case '4':   return head;  default:   printf("操作错误，此项不存在!\n");   break;  }  if(strcmp(num,"6")==0)   break; } return head;}//主函数void main(){ struct address_list *head=NULL; char num[10]; printf("*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*\n"); printf("*=*               程序说明                *=*\n"); printf("*=*    请及时保存创建完毕的通讯录内容!    *=*\n"); printf("*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*\n"); while(1) {  printf("************************\n");  printf("***     1 创建通讯录      ****\n");  printf("***     2 按名字排序      ****\n");  printf("***     3 综合操作        ****\n");  printf("***     4 保存            ****\n");  printf("***     5 打开            ****\n");   printf("***     6 删除            ****\n");  printf("***     7 退出            ****\n");  printf("************************\n");  printf("请输入您选择的操作:");  gets(num);  switch(*num)  {  case '1':   {    if(head==NULL)    {     head=creat();                                //创建     print(head);    }    else    {     head=shifang(head);     head=creat();                                //重新创建     print(head);    }   }   break;  case '2':   {    head=paixu(head);                               //排序   }   break;  case '3':   {    head=menu(head);                              //综合操作   }   break;  case '4':   {    save(head);                                   //文件保存    print(head);   }   break;  case '5':   {    head=load(head);                              //文件输出   }   break;  case '6':   {    head=delete_txl(head);                           //删除    print(head);   }   break;  case '7':   head=shifang(head);   break;  default:   printf("操作错误，此项不存在!\n");   break;  }  if(strcmp(num,"7")==0)   break; }}

           

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