为啥函数接收不到数据啊
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#define N 10
struct Student
{
char name[20];
float score[3];
}stu[3];
void Display(struct Student *a)
{
printf("----信息如下----\n");
printf("姓名:%s\n", a->name);
printf("语文:%.2f\n", a->score[0]);
printf("数学:%.2f\n", a->score[1]);
printf("英语:%.2f\n", a->score[2]);
printf("平均成绩:%.2f", (a->score[0] + a->score[1] + a->score[2]) / 3);
}
int main()
{
int i;
struct Student *p;
p = &stu[0];
for (i = 0; i<3; i++, p++)
{
printf("姓名:");
scanf("%s", &stu[i].name);
printf("\n");
printf("语文:");
scanf("%f", &stu[i].score[0]);
printf("\n");
printf("数学:");
scanf("%f", &stu[i].score[1]);
printf("\n");
printf("英语:");
scanf("%f",& stu[i].score[2]);
}
for (i = 0; i<3; i++, p++)
{
Display(p);
}
system("pause");
return 0;
}
``
```c
void Display(struct Student a[],int i)
{
printf("----信息如下----\n");
printf("姓名:%s\n",a[i].name);
printf("语文:%.2f\n",a[i].score[0]);
printf("数学:%.2f\n",a[i].score[1]);
printf("英语:%.2f\n",a[i].score[2]);
printf("平均成绩:%.2f",(a[i].score[0]+a[i].score[1]+a[i].score[2])/3);
}
为啥指针传参不对，去掉指针就可以了下面是改的
原来代码里，指针 p 已经被 p++ ,已经指向了数组stu[]之外了，修改如下，改动处见注释，供参考：
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#define N 10
struct Student
{
char name[20];
float score[3];
}stu[3];
void Display(struct Student* a)
{
printf("----信息如下----\n");
printf("姓名:%s\n", a->name);
printf("语文:%.2f\n", a->score[0]);
printf("数学:%.2f\n", a->score[1]);
printf("英语:%.2f\n", a->score[2]);
printf("平均成绩:%.2f", (a->score[0] + a->score[1] + a->score[2]) / 3);
}
void display(struct Student a[], int i) //修改
{
printf("----信息如下----\n");
printf("姓名:%s\n", a[i].name);
printf("语文:%.2f\n", a[i].score[0]);
printf("数学:%.2f\n", a[i].score[1]);
printf("英语:%.2f\n", a[i].score[2]);
printf("平均成绩:%.2f", (a[i].score[0] + a[i].score[1] + a[i].score[2]) / 3);
}
int main()
{
int i;
struct Student* p;
//p = &stu[0]; 修改 这里没用到指针 p ,多余了
for (i = 0; i < 3; i++) //for (i = 0; i < 3; i++, p++) 修改 p++ 多余
{
printf("姓名:");
scanf("%s", stu[i].name); //scanf("%s", &stu[i].name); 修改
printf("\n");
printf("语文:");
scanf("%f", &stu[i].score[0]);
printf("\n");
printf("数学:");
scanf("%f", &stu[i].score[1]);
printf("\n");
printf("英语:");
scanf("%f", &stu[i].score[2]);
}
for (i = 0, p = &stu[0]; i < 3; i++, p++) // 修改
{
Display(p);
display(stu, i); //修改
}
system("pause");
return 0;
}
void Display(struct Student *a, int i)
{
printf("----信息如下----\n");
printf("姓名:%s\n", (*(a + i)).name);
printf("语文:%.2f\n", (*(a + i)).score[0]);
printf("数学:%.2f\n", (*(a + i)).score[1]);
printf("英语:%.2f\n", (*(a + i)).score[2]);
printf("平均成绩:%.2f", ((*(a + i)).score[0] + (*(a + i)).score[1] + (*(a + i)).score[2]) / 3);
}