程序代码：

#include <stdio.h>
#include <stdlib.h>

struct worker
{
    char num[10];              /*职工号*/
    char name[10];        /*姓名*/  
    char sex[5];         /*性别*/
    char age[3];              /*年龄*/
    char graduation[10];  /*学历*/
    char salary[10];           /*工资*/
    char address[20];      /*地址*/
    char telephone[15];     /*电话号码*/
}wor[100];

void save(void);
void load(void);
int n=0;
void main()
{
   
    int i;
    printf("请输入职工人数:");
    scanf("%d",&n);
    for(i=0;i<n;i++)
    {
    printf("\n请输入职工的工号:");
        scanf("%s",wor[i].num);
    printf("\n请输入职工姓名:");
        scanf("%s",wor[i].name);
    printf("\n请输入职工性别:");
        scanf("%s",wor[i].sex);
    printf("\n请输入职工年龄:");
        scanf("%s",wor[i].age);
    printf("\n请输入职工学历:");
        scanf("%s",wor[i].graduation);
    printf("\n请输入职工工资:");
        scanf("%s",wor[i].salary);
    printf("\n请输入职工地址:");
        scanf("%s",wor[i].address);
    printf("\n请输入职工电话号码:");
        scanf("%s",wor[i].telephone);
    }
    save();
    load();
}

void save(void){
    FILE *fp;
    int i;
    if((fp=fopen("d:\\dx.txt","wb"))==NULL)  /*打开失败*/
    {
        printf("open fail\n");
        exit(0);        /*退出程序*/
    }
    for(i=0;i<n;i++)
    {
        if(fwrite(&wor[i],sizeof(wor),1,fp)!=1)
        {
            printf("file write error\n");
            exit(0);
        }
    }
    fclose(fp);
}

void load(void){
    FILE *fp;
    int i;
    if((fp=fopen("d:\\dx.txt","rb"))==NULL)  /*打开失败*/
    {
        printf("open fail\n");
        exit(0);        /*退出程序*/
    }
    for(i=0;i<n;i++)
    {
        if(fread(&wor[i],sizeof(wor),1,fp)!=1)
        {
            printf("file read error\n");
            exit(0);
        }
    }
    fclose(fp);
}