文件读入输出-c语言

Question

输入职工信息，建立一个磁盘文件，再将职工名，工资另建一个简明的职工工资文件。
不知道哪里错了

#include <stdio.h>
#include <stdlib.h>
struct employee{
    char name[20];
    int num;
    char sex;
    int age;
    char addr[20];
    float salary;
    char health[8];
    char education[10];
}person[2];
 int main(){
     //建立磁盘文件
     FILE *fp;
     if((fp=fopen("employee.dat","wb"))==NULL){
         printf("cannot open file\n");
         exit(0); 
     } 
     printf("enter :\n");
     int i;
     for(i=0;i<2;i++)
     scanf("%s%d%c%d%s%f%s%s",person[i].name,&person[i].num,&person[i].sex,&person[i].age,
     person[i].addr,&person[i].salary,person[i].health,person[i].education);
     //写入磁盘
     for(i=0;i<2;i++)
     fwrite(&person[i],sizeof(struct employee),1,fp);
     fclose(fp); //完毕
     
     struct employee person1[2];
     struct employee1{
         char name[20];
         float salary;
     }person2[2]; 
     //读出磁盘文件
     if((fp=fopen("employee.dat","rb"))==NULL){
         printf("cannot open file\n");
         exit(0);
     } 
     for(i=0;i<2;i++){
     fread(&person1[i],sizeof(struct employee),1,fp);
     strcpy(person2[i].name,person1[i].name);
     person2[i].salary=person1[i].salary;
 }
     fclose(fp);
     FILE *fp1;
     if((fp1=fopen("employee1.dat","wb"))==NULL){
         printf("cannot open file\n");
         exit(0);
     } 
     for(i=0;i<2;i++)
     fwrite(&person2[i],sizeof(struct employee1),1,fp);
     fclose(fp1);
     return 0;
 }

Answer 1

获取信息那里改一下，在%c之前增加一个空格，忽略输入中的空格；

然后增加打印文件信息的代码，以便检查输入的信息是否正确即可。

修改如下：

参考链接：

https://blog.csdn.net/weixin_45729253/article/details/103095937

#include <stdio.h>
#include <stdlib.h>
#include <string.h> 
struct employee{
    char name[20];
    int num;
    char sex;
    int age;
    char addr[20];
    float salary;
    char health[8];
    char education[10];
}person[2];
 int main(){
     //建立磁盘文件
     FILE *fp;
     if((fp=fopen("employee.dat","wb"))==NULL){
         printf("cannot open file\n");
         exit(0); 
     } 
     printf("enter :\n");
     int i;
     for(i=0;i<2;i++)
     // https://blog.csdn.net/weixin_45729253/article/details/103095937
     // %c前面增加一个空格，以便忽略输入的空格 
     scanf("%s%d %c%d%s%f%s%s",person[i].name,&person[i].num,&person[i].sex,&person[i].age,
     person[i].addr,&person[i].salary,person[i].health,person[i].education);
     //写入磁盘
     for(i=0;i<2;i++)
     fwrite(&person[i],sizeof(struct employee),1,fp);
     fclose(fp); //完毕
     
     struct employee person1[2];
     struct employee1{
         char name[20];
         float salary;
     }person2[2]; 
     //读出磁盘文件
     if((fp=fopen("employee.dat","rb"))==NULL){
         printf("cannot open file\n");
         exit(0);
     } 
     
     for(i=0;i<2;i++){
         fread(&person1[i],sizeof(struct employee),1,fp);
         // 增加打印文件信息的代码，以检查数据是否输入正确 
         printf("%s %d %c %d %s %f %s %s\n",person[i].name,person[i].num,person[i].sex,person[i].age,
         person[i].addr,person[i].salary,person[i].health,person[i].education);
         strcpy(person2[i].name,person1[i].name);
         person2[i].salary=person1[i].salary;
     } 
     fclose(fp);
     
     FILE *fp1;
     if((fp1=fopen("employee1.dat","wb"))==NULL){
         printf("cannot open file\n");
         exit(0);
     } 
     for(i=0;i<2;i++)
         fwrite(&person2[i],sizeof(struct employee1),1,fp);
     fclose(fp1);
     
     if((fp1=fopen("employee1.dat","rb"))==NULL){
         printf("cannot open file\n");
         exit(0);
     } 
    struct employee1 personRead[2];
     for(i=0;i<2;i++){
         fread(&personRead[i],sizeof(struct employee1),1,fp);
           // 增加打印文件信息的代码，以检查数据是否输入正确 
         printf("%s %f\n",personRead[i].name,personRead[i].salary);
     }
         
     fclose(fp1);
     
     return 0;
 }