C语言单链表实现通讯录管理系统

struct infor{
 char name[20];
 int age;
 char sex[8];
 char telephone[16];
};

struct addre* Creathead(){                        //创建头链表
 struct addre *headnode = (struct addre*)malloc(sizeof(struct addre));
 if (headnode == NULL){
  printf("malloc error\n");
 }
 headnode->next = NULL;
 return headnode;

}

struct addre* Creatlist(struct infor *list){      //创建节点
 struct addre *node = (struct addre*)malloc(sizeof(struct addre));
 if (node == NULL){
  printf("malloc error\n");
 }
 node->next = NULL;
 node->people.age = list->age;
 strcpy(node->people.name, list->name);
 strcpy(node->people.sex, list->sex);
 strcpy(node->people.telephone, list->telephone);

 return node;
}

void Addlist(struct addre *headnode,struct infor *list){ //插入节点
 struct addre *t = headnode;
 while (t->next != NULL){
  t = t->next;
 }
 struct addre *nodelist = Creatlist(list);
 t->next = nodelist;
 nodelist->next = NULL;
}

void Addpeople(struct addre* node){                     //添加人的信息
 struct infor *a=malloc(sizeof(struct infor));       // 创建动态信息结构体指针
 if (a == NULL){
  printf("malloc error\n");
 }
 printf("请输入名字\n");
 scanf("%s", a->name);
 printf("请输入年龄\n");
 scanf("%d", &a->age);
 printf("请输入性别\n");
 scanf("%s", a->sex);
 printf("请输入电话号码\n");
 scanf("%s", a->telephone);
 Addlist(node, a);                        //用尾插法插入该人信息
 printf("添加成功!\n");
}
void Deletepeople(struct addre *node){                //删除人的信息
 char *str = malloc(sizeof(char)* 10);
 if (str == NULL){                                 //通过名字寻找
  printf("malloc error\n");
 }
 printf("请输入要删除人的姓名\n");
 scanf("%s", str);
 struct addre *strat = node;
 struct addre *end = node->next;
 int flag = 0;                                    //判断是否找到 0为未找到，1 找到
 while (end){                    //判断end的  不然会越界
  if (strcmp(end->people.name, str) == 0){
   flag = 1;
   break;
  }
  node = node->next;                           //到下一个链表
  strat = node;                               //一个指向前面 一个指向后面，删除将end删除，前面那个直接指向end的指向
  end = node->next;
 }
 if (flag){
  strat->next = end->next;
  printf("删除成功\n");
  free(end);
 }
 else{
  printf("没找到！\n");
 }
}

void Modifyinfor(struct addre *node){              //修改人的信息
 char *str = malloc(sizeof(char)* 10);          //通过名字寻找
 if (str == NULL){
  printf("malloc error\n");
 }
 printf("请输入要修改人的姓名\n");
 scanf("%s", str);
 int flag = 0;
 while (node){
  if (strcmp(node->people.name, str) == 0){
   flag = 1;
   break;
  }
  node = node->next;
 }
 if (flag){
  printf("请重新输入该人信息\n");
  printf("请输入名字\n");
  scanf("%s", node->people.name);
  printf("请输入年龄\n");
  scanf("%d", &node->people.age);
  printf("请输入性别\n");
  scanf("%s", node->people.sex);
  printf("请输入电话号码\n");
  scanf("%s", node->people.telephone);
  printf("修改成功\n");
 }
 else{
  printf("没找到\n");
 }
}
void Foundpeople(struct addre *node){                //找到某人的信息并打印出来
 char *str = malloc(sizeof(char)* 10);            //通过名字寻找
 if (str == NULL){
  printf("malloc error\n");
 }
 printf("请输入要查找人的姓名\n");
 scanf("%s", str);
 int flag = 0;
 while (node){
  if (strcmp(node->people.name, str) == 0){
   flag = 1;
   break;
  }
  node = node->next;
 }
 if (flag){
  printf("name\tage\tsex\ttelephone\n");
  printf("%s\t", node->people.name);
  printf("%d\t", node->people.age);
  printf("%s\t", node->people.sex);
  printf("%s\t", node->people.telephone);
 }
 else{
  printf("没找到！\n");
 }
}

void Display(struct addre *node){
 struct addre *pmove = node->next; //要从头节点的下一个节点显示信息
 printf("name\tage\tsex\ttelephone\n");
 while (pmove){
  printf("%s\t%d\t%s\t%s\n", pmove->people.name, pmove->people.age, pmove->people.sex, pmove->people.telephone);
  pmove = pmove->next;
 }
}

void Menu(){
 printf("+-----------------+\n");
 printf("+-1.add   2.delet-+\n");
 printf("+-3.modify 4.seek-+\n");
 printf("+-5.display6.exit-+\n");
 printf("+-----------------+\n");
 printf("Please Enter Your Select\n");
}

#include"addressbank.h"


int main(){
 struct addre* node = Creathead();
 int quit = 0;
 while (!quit){
  
  Menu();
  int select = 0;
  scanf("%d", &select);
  switch (select){
  case 1:
   Addpeople(node);
   break;
  case 2:
   Deletepeople(node);
   break;
  case 3:
   Modifyinfor(node);
   break;
  case 4:
   Foundpeople(node);
   break;
  case 5:
   Display(node);
   break;
  case 6:
   quit = 1;
   break;
  default:
   printf("Enter Error!\n");
   break;
  }
 }
 system("pause");
 return 0;
}

#ifndef __ADDRESSBANK_H__
#define __ADDRESSBANK_H__

#include<stdio.h>
#include<string.h>
struct infor{//信息结构体
 char name[20];
 int age;
 char sex[8];
 char telephone[16];
};
struct addre{ //链表
 struct infor people;
 struct addre *next;
};
//功能函数
extern void Menu();
extern void Addpeople(struct addre *node);
extern void Deletepeople(struct addre *node);
extern void Modifyinfor(struct addre *node);
extern void Foundpeople(struct addre *node);
extern void Display(struct addre *node);
//下面未链表函数
extern struct addre* Creatlist(struct infor *list);
extern struct addre* Creathead();
extern void Addlist(struct addre *headnode, struct infor *list);

#endif