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:%d\nName:%s\nSex:%s\nAge:%d\nEdu-exp:%s\nWage:%d\nAdress:%s\nPhone:%s\n",
    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  %s\n", p->id, p->name, p->sex, p->age, p->edu_exp,
   p->wage, p->adress, 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, "%s  ", p->sex);
  fprintf(fp, "%d  ", p->age);
  fprintf(fp, "%s  ", p->edu_exp);
  fprintf(fp, "%d  ", p->wage);
  fprintf(fp, "%s  ", p->adress);
  fprintf(fp, "%s  ", p->phong);
  fprintf(fp, "\t\r\n");
  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N\n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;
}