从键盘输入4个学生数据，把他们转存到磁盘文件中去 重点内容
student_type{char name[10];int num;int age;char addr[15];}stud[SIZE];main(){void display();void save();printf(“%s\n”,”liuwei”);int i;for (i = 0; i<SIZE; i++)scanf(“%s%d%d%s”, stud[i].name, &stud[i].num,&stud[i].age, stud[i].addr);save();display();}void save(){FILE *fp;int i;if ((fp = fopen(“d:\\stu_dat.data”, “wb”)) == NULL){printf(“cannot open file\n”);return;}for (i = 0; i<SIZE; i++)if (fwrite(&stud[i], sizeof(struct student_type), 1, fp) != 1)printf(“file write error\n”);fclose(fp);}void display(){FILE *fp;int i;if ((fp = fopen(“d:\\stu_dat.data”, “rb”)) == NULL){printf(“cannot open file\n”);return;}for (i = 0; i<SIZE; i++){fread(&stud[i], sizeof(struct student_type), 1, fp);printf(“%s”,stud[i].name);printf(“%-10s %4d %4d %-15s\n”, stud[i].name,stud[i].num, stud[i].age, stud[i].addr);}fclose(fp);}———-
，“人无完人金无足赤”，只要是人就不会是完美的，
