#include<stdio.h>

#include<stdlib.h>

#include<string.h>

#define size 3

struct employee

{  char name[6];                           //姓名

char num[8];                            //编号

char sex[2];                           //性别

int age;                                //年龄

char addr[10];                          //地址

int money;                             //工资

char health[4];                         //身体健康程度

char cul[4];                           //文化程度

}emp[size];                                               //employee结构体

struct employee_type

{  char name[6];

int money;

}empl[size];                                              //employee_type结构体

void save()                                                             //存储职工的全部信息

{  FILE *fp;

int i;

printf("Please enter data of employee:\n");

for(i=0;i<size;i++)

scanf("%s%s%s%d%s%d%s%s",emp[i].name,emp[i].num,emp[i].sex,&emp[i].age,emp[i].addr,&emp[i].money,emp[i].health,emp[i].cul);

if((fp=fopen("employee.dat","wb"))==NULL)  {   printf("can't open file!\n");   exit(0);  }

for(i=0;i<size;i++)

if(fwrite(&emp[i],sizeof(struct employee),1,fp)!=1)         //从emp[i]地址开始的数据给fp文件

printf("file write error!\n");

fclose(fp); }

void duchu()                                                           //读出职工的全部信息

{  FILE *fp;  int i;  printf("显示职工信息：\n");

if((fp=fopen("employee.dat","rb"))==NULL)

{   printf("can't open file!\n");   exit(0);  }

for(i=0;i<size;i++)

{   fread(&emp[i],sizeof(struct employee),1,fp);                 //把存放文件fp的地址给emp[i]

printf("%-5s %-5s %-5s %-5d %-5s %-5d %-5s %-5s\n",emp[i].name,emp[i].num,emp[i].sex,emp[i].age,emp[i].addr,emp[i].money,emp[i].health,emp[i].cul);  }  fclose(fp); }

void chouqu()                                                   //抽取职工的name及money

{  FILE *fp,*in;  int i;

if((fp=fopen("employee.dat","rb"))==NULL)                     //以只读的方式打开文件

{   printf("can't open file!\n");   exit(0);  }

if((in=fopen("employee_type.dat","wb"))==NULL)          //以只读的方式打开文件

{   printf("can't open file!\n");   exit(0);  }

for(i=0;i<size;i++)

{   fread(&emp[i],sizeof(struct employee),1,fp);

strcpy(empl[i].name,emp[i].name);

empl[i].money=emp[i].money;

if(fwrite(&empl[i],sizeof(struct employee_type),1,in)!=1)            //从empl[i]的地址开始的数据给in文件

printf("file write error!\n");  }  fclose(fp);  fclose(in); }

void duchu2()                                                                   //读出抽取出来的信息

{  FILE *in;  int i;  printf("显示信息：\n");

if((in=fopen("employee_type.dat","rb"))==NULL)                                //以只读的方式打开文件

{   printf("can't open file!\n");   exit(0);  }

for(i=0;i<size;i++)

{   fread(&empl[i],sizeof(struct employee_type),1,in);                  //把文件in内的数据地址给empl[i]

printf("%-5s %-5d\n",empl[i].name,empl[i].money);  }  fclose(in); }

int main()

{  //save();  chouqu();  duchu();  duchu2();  return 0; }