C语言职工管理系统设计

#include<stdio.h>
#include<stdlib.h>
#include <string.h>
struct Worker
{
  int id;//工号
  char name[16];//姓名
  char sex[8];//性别
  int age;//年龄
  char edu_exp[32];//学历
  int wage;//工资
  char adress[32];//地址
  char phong[16];//电话
  Worker* next;
};
//创建表头
Worker m_head = { 0 };
//用户输入信息
int user_input(Worker* w)
{
  printf("ID:");
  scanf("%d",&w->id);
  getchar();//吸收回车字符
  printf("name:");
  gets_s(w->name);
  printf("sex:");
  gets_s(w->sex);
  printf("age:");
  scanf("%d",&w->age);
  getchar();//吸收回车字符
  printf("edu_exp:");
  gets_s(w->edu_exp);
  printf("wage:");
  scanf("%d",&w->wage);
  getchar();//吸收回车字符
  printf("adress:");
  gets_s(w->adress);
  printf("phone:");
  gets_s(w->phong);

  return 0;
}
//添加对象
void add(Worker* w)
{
  w->next = m_head.next;
  m_head.next = w;

}
//按插入对象
int insert(Worker* w)
{
  Worker* cur = m_head.next; // 当前节点current
  Worker* pre = &m_head; // 上一个节点previous
  while (cur)
  {
    if (w->id < cur->id) // 找到这个位置
      break;

    pre = cur;
    cur = cur->next; // 找到最后一个对象
  }

  // 插入到pre节点的后面
  w->next = pre->next;
  pre->next = w;
  return 0;
}
//删除对象
int remove(int id)
{
  Worker* cur = m_head.next;//当前节点为第一个对象
  Worker* pre = &m_head;//当前节点的前一个节点，为头节点，指向第一个对象
  while (cur)
  {
    if (id == cur->id)//找到要删除的节点
    {
      pre->next = cur->next;
      free(cur);//删除该节点
      return 1;//成功删除返回1
    }
    pre = cur;
    cur = cur->next;

  }
  return 0;
}
//查找对象
int find(int id)
{
  Worker* p = m_head.next;
  while (p)
  {
    if (id == p->id)
    {
      printf("ID:%dnName:%snSex:%snAge:%dnEdu-exp:%snWage:%dnAdress:%snPhone:%sn",p->id,p->name,p->sex,p->age,p->edu_exp,p->wage,p->adress,p->phong);
      return 1;//找到目标返回1
    }
    p = p->next;
  }
  return 0;
}

//遍历
void show_all()
{
  Worker* p = m_head.next;
  if (!p)
  {
    printf("暂无员工信息!n");
    return;
  }
  printf("工 号    姓 名   性 别   年 龄  学 历  工 资  住 址      电 话n");
  printf("----------------------------------------------------------------n");
  while (p)
  {

    printf("%d   %s  %s  %d  %s %d %s   %sn",p->phong);
    p = p->next;
  }
}
//向文件存入数据
int save()
{
  const char* filename = "F:data.txt";
  FILE* fp = fopen(filename,"a");
  if (fp == NULL)
  {
    printf("can not open the file....");
    exit(0);
  }
  Worker* p = m_head.next;
  while (p)
  {
    fprintf(fp,"r");
    fprintf(fp,"%d   ",p->id);
    fprintf(fp,"%s   ",p->name);
    fprintf(fp,p->sex);
    fprintf(fp,p->age);
    fprintf(fp,p->edu_exp);
    fprintf(fp,p->wage);
    fprintf(fp,p->adress);
    fprintf(fp,p->phong);
    fprintf(fp,"trn");
    p = p->next;

  }


  fclose(fp);
  return 0;

}

//修改对象
void rewrite(int id)
{
  Worker* p = m_head.next;
  while (p)
  {
    if (id == p->id)
    {
      user_input(p);
    }
    p = p->next;
  }

}
//主菜单
void List()
{
  Worker* w = NULL;
  char key;
  while (1)
  {

    do
    {
      system("cls");
      printf("*******************************************************n");
      printf("*         主菜单操作界面           *n");
      printf("*                           *n");
      printf("* 1.录入职工信息                   *n");
      printf("* 2.浏览职工信息                   *n");
      printf("* 3.查询职工信息                   *n");
      printf("* 4.删除职工信息                   *n");
      printf("* 5.修改职工信息                   *n");
      printf("* 6.使用说明                     *n");
      printf("* 7.退出                       *n");
      printf("*                           *n");
      printf("*******************************************************n");

      key = getchar();

    } while (key != '1'&&key != '2'&&key != '3'&&key != '4'
      &&key != '5'&&key != '6'&&key != '7');

    switch (key)
    {
    case '1':system("cls");
      while (1)
      {
        Worker* w = (Worker*)malloc(sizeof(Worker));
        user_input(w);
        insert(w);
        if (getchar() == 'N')
        {
          break;
        }
      }
      save();
      free(w);
      break;
    case '2':system("cls");
      show_all();
      system("pause");
      break;
    case '3':system("cls");
      if (!m_head.next)
      {
        printf("暂无员工信息!n");
        system("pause");
        break;
      }
      while (1)
      {
        int n;
        printf("---------------------------------n");
        printf("请输入要查找的ID号:");
        scanf("%d",&n);
        if (!find(n))
        {
          printf("找不到ID号为%d 的职工信息...n",n);
        }
        char ch = getchar();
        if (ch == 'N')
        {
          break;
        }

      }
      break;

    case '4':system("cls");
      if (!m_head.next)
      {
        printf("暂无员工信息!n");
        system("pause");
        break;
      }
      while (1)
      {
        int n;
        printf("---------------------------------n");
        printf("请输入要删除的ID号:");
        scanf("%d",&n);
        if (remove(n))
        {
          printf("成功删除ID号为%d的职工信息.n",n);
        }
        else
          printf("无法删除ID号为%d的职工信息.n",n);
        char ch = getchar();
        if (ch == 'N')//摁N退出
        {
          break;
        }
      }
      break;
    case '5':system("cls");//
      if (!m_head.next)
      {
        printf("暂无员工信息!n");
        system("pause");
        break;
      }
      while (1)
      {
        int n;
        printf("请输入要修改的ID号:n");
        scanf("%d",&n);
        printf("请修改:n");
        rewrite(n);
        if (getchar() == 'N')
        {
          break;
        }
      }
      break;
    case '6':system("cls");
      printf("职工系统使用说明:摁相应数字进入相应的子菜单，若想退出则摁Nn开始无数据，需要先进行录入.n");
      system("pause");
      break;
    case '7':system("cls");//
      return;
      break;

    }
  }
}
int main()
{

  List();
  return 0;
}