- #include<stdio.h>
- #define SIZE 10
- struct student
- {
- char name[10];
- int num;
- int age;
- char addr[15];
- }stu[SIZE];
- //保存数据(fwrite)
- void save()
- {
- FILE *fp;
- fp = fopen("stu.dat","wb");
- if(fp==NULL)
- {
- printf("file can not open!\n");
- return;
- }
- for(int i=0;i<SIZE;i++)
- {
- if(fwrite(&stu[i],sizeof(struct student),1,fp)!=1)
- {
- printf("file write error!\n");
- }
- }
- fclose(fp);
- }
- //读取数据(fread)
- void load()
- {
- FILE *fp;
- fp = fopen("stu.dat","rb");
- if(fp==NULL)
- {
- printf("file can not open!\n");
- return;
- }
- for(int i=0;i<SIZE;i++)
- {
- if(fread(&stu[i],sizeof(struct student),1,fp)!=1)
- {
- if(feof(fp))
- {
- fclose(fp);
- return;
- }
- printf("file read error!\n");
- }
- printf("%-10s %4d %4d %-15s\n",stu[i].name,stu[i].num,stu[i].age,stu[i].addr);
- }
- fclose(fp);
- }
- int main()
- {
- printf("Please enter data of students:\n");
- for(int i=0;i<SIZE;i++)
- {
- scanf("%s%d%d%s",stu[i].name,&stu[i].num,&stu[i].age,stu[i].addr);
- }
- save();
- load();
- return 0;
- }
时间: 2024-12-06 17:26:18