#include<stdio.h>

#include<stdlib.h>

int main() {
struct stuscoretype
{
int stuid;
int score[3];
double average;
};
struct stuscoretype stu[3];
int i, j;
printf(“input student’s\n”);
for (j = 0; j < 3; j++)
// 3为学生人数
scanf_s(“%d”, &stu[j].stuid);
for (i = 0; i < 3; i++)
scanf_s(“%d”, &stu[j].score[i]);
//计算平均分
for (j = 0; j < 3; j++)
{
stu[j].average = 0.0;
for (i = 0; i < 3; i++)
stu[j].average = stu[j].average + stu[j].score[i];
stu[j].average = stu[j].average / 3.0;
}
printf(“output the average\n”);
for (j = 0; j < 3; j++)
printf(“%d:%6.2f\n”, stu[j].stuid, stu[j].average);

return 0;

}