程序代码：

#include <stdio.h>
#include <stdlib.h>

typedef
struct{
char name[10];
char sex;
unsigned int age;
}Person;

typedef
struct{
  int math;
  int english;

 int chinese;
  int average;
}Grade;

typedef
struct{
Person person;
long number;
Grade grade;
}Student;
void personInput(Person *pPerson);
void personOutput(Person *pPerson);
void gradeInput(Grade *pGrade);
void gradeOutput(Grade *pGrade);
void studentInput(Student *pstudent);
void studentOutput(Student *pstudent);

int main()
{
    int i;
    Student stu[]={{},{}};


    printf("请输入学生信息：");
  studentInput(&stu[i]);}
if(Student stu[0]->Grade->average<Student stu[1]->Grade->average)
    printf("%s 比 %s 平均成绩低",stu[0],stu[1]);
else printf("%s 比 %s 平均成绩低",stu[1],stu[0]);
   for(i=0;i<2;i++)
  studentOutput(&stu[i]);
    printf("So Easy!");

    return 0;

}

 void personInput(Person *pPerson){
printf("请输入姓名：");
scanf("%s",pPerson->name);
getchar();
printf("请输入性别：");
scanf("%c",&(pPerson->sex));
printf("请输入年龄：");
scanf("%u",&(pPerson->age));}

void personOutput(Person *pPerson){
printf("person:%s的个人信息为：\n",pPerson->name);
printf("\t Name: %s\n",pPerson->name);
printf("\t Sex : %c\n",pPerson->sex);
printf("\t Age : %d\n",pPerson->age);
}
void gradeInput(Grade *pGrade){
printf("请输入数学成绩：");
scanf("%d",&pGrade->math);
printf("请输入英语成绩：");
scanf("%d",&pGrade->english);
printf("请输入语文成绩：");
scanf("%d",&pGrade->chinese);
printf("请输入平均分成绩：");
scanf("%d",&pGrade->average);
}
void gradeOutput(Grade *pGrade){
printf("\t 数学：%d\n",pGrade->math);
printf("\t 英语：%d\n",pGrade->english);
printf("\t 语文：%d\n",pGrade->chinese);
printf("\t 平均分：%d\n",pGrade->average);
}
void studentInput(Student *pstudent){
    personInput(&pstudent->person);
    printf("请输入学号：\n");
    scanf("%ld",&pstudent->number);
    gradeInput(&pstudent->grade);
    }
void studentOutput(Student *pstudent){
    personOutput(&pstudent->person);
    gradeOutput(&pstudent->grade);
    printf("学号：%ld",pstudent->number);


}

[此贴子已经被作者于2016-12-13 14:12编辑过]