#include <stdio.h>#include <malloc.h>#include <stdlib.h>#include <string.h>struct txl{char n[10];char name[10];char sex [10];char tele[12];char address[100];struct txl *next;};typedef struct txl TXL;typedef struct txl * link;enum result {exit_ok};void menu_select()//主菜单{printf(" 欢迎进入通讯录管理系统\n");printf("********************************\n");printf(" 1.联系人添加\n");printf(" 2.联系人删除\n");printf(" 3.联系人修改\n");printf(" 4.联系人查找\n");printf(" 5.联系人总览\n");printf(" 0.退出通讯录管理系统\n");printf("********************************\n"); }void is_malloc_ok(link *new_node){if((*new_node) == NULL){printf("Malloc error!");exit(-1);}}void create_link(link *head){(*head) = (link)malloc(sizeof(TXL));is_malloc_ok(head);(*head)->next = NULL;}void create_new_node(link *new_node){int i;*new_node = (link)malloc(sizeof(TXL));is_malloc_ok(new_node);printf("请输入编号:\n");scanf("%s",&(*new_node)->n);printf("请输入姓名:\n");scanf("%s",&(*new_node)->name);printf("请输入性别:\n");scanf("%s",&(*new_node)->sex);printf("请输入联系电话:\n");scanf("%s",&(*new_node)->tele);printf("请输入家庭地址:\n");scanf("%s",&(*new_node)->address);printf("联系人添加成功！\n");}insert_new_node(link *new_node,link *head) {(*new_node)->next = (*head)->next;(*head)->next = (*new_node);}void add_new_node(link *head){link new_node;create_new_node(&new_node);insert_new_node(&new_node,head);}void display(link *head){int i = 1;link p = NULL;if((*head)->next == NULL){printf("通讯录为空!\n");return;}else{p = (*head)->next;while(p != NULL){printf("第%d个联系人的信息如下:\n",i);printf("序号:%s\n",p->n);printf("姓名:%s\n",p->name);printf("性别:%s\n",p->sex);printf("联系电话:%s\n",p->tele);printf("家庭地址:%s\n\n\n",p->address);p = p->next;i++;}}}void find(link *head){char n1[10],name1[10],tele1[12],address1[100];int i;link xz = (*head)->next;printf("1.按编号查询\n");printf("2.按姓名查询\n");printf("3.按联系电话查询\n");printf("请输入您想选择的查询方式:\n");scanf("%d",&i);if(i == 1){printf("请输入您想查询的编号:\n");scanf("%s",n1);if(xz == NULL){printf("通讯录为空！\n");return;}while(xz !=NULL){if(strcmp(xz->n,n1) == 0){printf("您想查询的联系人的信息如下:\n");printf("编号:%s\n",xz->n);printf("姓名:%s\n",xz->name);printf("性别:%s\n",xz->sex);printf("联系电话:%s\n",xz->tele);printf("家庭地址:%s\n",xz->address);return;}elsexz = xz->next;}printf("通讯录中无此人!\n");}if(i == 2){printf("请输入您想查询的姓名:\n");scanf("%s",name1);if(xz == NULL){printf("通讯录为空！\n");return;}while(xz != NULL){if(strcmp(xz->name,name1) == 0){printf("您想查询的联系人的信息如下:\n");printf("编号:%s\n",xz->n);printf("姓名:%s\n",xz->name);printf("性别:%s\n",xz->sex);printf("联系电话:%s\n",xz->tele);printf("家庭地址:%s\n",xz->address);return;}elsexz = xz->next;}printf("通讯录中无此人!\n");return;}if(i == 3){printf("请输入您想查询的联系电话:\n");scanf("%s",tele1);if(xz == NULL){printf("通讯录为空！\n");return;}while(xz != NULL){if(strcmp(xz->tele,tele1) == 0){printf("您想查询的联系人的信息如下:\n");printf("编号:%s\n",xz->n);printf("姓名:%s\n",xz->name);printf("性别:%s\n",xz->sex);printf("联系电话:%s\n",xz->tele);printf("家庭地址:%s\n",xz->address);return;}elsexz = xz->next;}printf("通讯录中无此人!\n");return;}}void change(link *head){int a;link p = (*head)->next;char name1[10];char tele1[12];char address1[100];printf("请输入您想修改的联系人信息:\n");printf("1.姓名\n");printf("2.联系电话:\n");printf("3.家庭地址:\n");scanf("%d",&a);if(a == 1){printf("请输入原姓名:\n");scanf("%s",name1);while( p != NULL){if((strcmp(p->name,name1)) == 0){printf("请输入新的姓名:\n");scanf("%s",&p->name);printf("联系人修改成功!\n");return;}elsep = p->next;}printf("通讯录中没有此人!\n");return;}if(a == 2){printf("请输入原联系电话:\n");scanf("%s",tele1);while(p != NULL){if((strcmp(p->tele,tele1)) == 0){printf("请输入新的联系电话:\n");scanf("%s",&p->tele);printf("联系人修改成功!\n");return;}elsep = p->next;}printf("通讯录中没有此人!\n");}if(a == 3){printf("请输入原家庭地址:\n");scanf("%s",address1);while(p != NULL){if((strcmp(p->address,address1)) == 0){printf("请输入新的家庭地址:\n");scanf("%s",&p->address);printf("联系人修改成功!\n");return;}elsep = p->next;}printf("通讯录中没有此人!\n");}}void delete(link *head){link p1 = (*head);link p2 = (*head)->next;char name1[10];printf("请输入您要删除的联系人姓名:\n");scanf("%s",name1);if((*head)->next = NULL){printf("通讯录为空!\n");return;}while((strcmp(p2->name,name1) != 0)&&p2->next !=NULL) {p1 = p2;p2 = p2->next;}if(p2->next == NULL ){if(strcmp(p2->name,name1) == 0){p1->next = NULL;printf("该联系人已删除!\n");free(p2);}else{printf("通讯录中无此人!\n");}}else{p1->next = p2->next;free(p2);}}void exit_link(){printf("************************\n");printf(" 再见!\n");exit(exit_ok);}void switch_function(link *head){int num;scanf("%d",&num);switch(num){case 1:add_new_node(head); break;case 2:delete(head);break;case 3:change(head);break;case 4:find(head);break;case 5:display(head);break;case 0:exit_link();break;default:printf("该功能不存在,请重新输入!");break;}}int main(){link head = NULL;link new_node = NULL;create_link(&head);menu_select();while(1){printf("请输入您想要的功能:\n");switch_function(&head);}return 0;}。