编程有5个学生，每个学生有3门课的成绩，从键盘输入以上数据（包括学号，姓名，三门课成绩），计算出总成绩，将原有的数据和计算出的总分数存放在磁盘文件stu.txt中。
#include <stdio.h>
#include<stdlib.h>
#define SIZE 2
struct Student
{
int num;
char name[10];
float score[3];
float ave;
}stu[SIZE];
void save(struct Student stud[], int n)
{
FILE* fp;
int i;
if ((fp = fopen("stu.txt", "wb")) == NULL)
{
printf("不能打开");
exit(0);
}
for (i = 0; i < n; i++)
{
if (fwrite(&stud[i], sizeof(struct Student), 1, fp) != 1)
{
printf("NO !");
}
}
fclose(fp);
}
void input(struct Student stu[])
{
int i;
printf("please input data of student:\n");
for (i = 0; i < SIZE; i++)
{
scanf_s("%d %s %f %f %f", &stu[i].num, stu[i].name, &stu[i].score[0], &stu[i].score[1], &stu[i].score[2]);
stu[i].ave = (stu[i].score[0] + stu[i].score[1] + stu[i].score[2]) / 3;
}
}
void print(struct Student stud[], int n)
{
FILE* out;
int i;
if ((out = fopen("stu.txt", "rb")) == NULL)
{
printf("不能打开");
exit(0);
}
for (i = 0; i < n; i++)
{
fread(&stud[i], sizeof(struct Student), 1, out);
printf("%d %s %.2f %.2f %.2f %.2f\n", stud[i].num, stud[i].name, stud[i].score[0], stud[i].score[1], stud[i].score[2], stud[i].ave);
}
}
int main()
{
void input(struct Student stu[]);
int i;
struct Student stu[SIZE], * p = stu;
input(p);
save(p, SIZE);
print(p, SIZE);
return 0;
}
这个报错是为什么。
