#include<stdio.h>
#define SIZE 5
struct student{
    long num;
    char name[10];
    float score[3];
}stu[SIZE];
void save()
{
    FILE *fp;
    int i;
    if((fp=fopen("d:\\stud.txt","a"))==NULL)
    {
        printf("cannot open file\n");
        return;
    }
    for(i=0;i<SIZE;i++)
        if(fwrite(&stu[i],sizeof(struct student),1,fp)!=1)
            printf("file write error");
    fclose(fp);
}
main()
{
    int i;
    for(i=0;i<SIZE;i++)
        scanf("%ld%s%f%f%f",&stu[i].num,stu[i].name,&stu[i].score[0],&stu[i].score[1],&stu[i].score[2]);
        save();
}