//9.1.1
strust Date
{
    int mouth;
    int day;
    int year;
};
struct Student
{
    int num;
    char name[20];
    char sex;
    int age;
    structDate birthday;
    char addr[30];
};

//9.1.2
struct Student
{
    int num;
    char name[20];
    char sex;
    int age;
    float score;
    char addr[30];
    
}student1,student2;

//9.1.3
#include<stdio.h>
int main()
{
    struct Student
    {
        long int num;
        char name[20];
        char sex;
        char addr[20];
    }a={10101,"LI Lin",‘M‘,"123Beijing Road"};
    printf("NO.:%ld\nname:%s\nsex:%c\naddress:%s\n",a.num,a.name,a.sex,a.addr);
    return 0;
}

#include<stdio.h>
//9.2.1
#include<string.h>
struct Person
{
    char name[20];
    int count;
} leader[3] = {"Li",0,"Zhang",0,"Sun",0};
int main()
{int i,j;
char leader_name[20];
for(i=1;i<=10;i++)
{
    scang("%s",leader_name);
    for(j=0;j<3;j++)
    {
        if(stremp(leader_name,leader[j].name)==0)leader[j].count++;
    }
}
printf("\nResult:\n");
for(i=0;i<3;i++)
printf("%5s:%d\n",leader[i].name,leader[i].count);
return 0;
}

//9.2
#include<stdio.h>
int main()
{
    struct Student
    {
        int num;
        char name[20];
        float score;
    }student1,student2;
scanf("%d%s%f",&student1.num,student1.name,&student1.score);
scanf("%d%s%f",&student2.num,student2.name,&student2.score);
printf("The higher score is:\n");
if(student1.score>student2.score)
printf("%d %s %6.2f\n",student1.num,student1.name,student1.score);
else
printf("%d %s %6.2f\n",student1.num,student1.name,student1.score);
return 0;
}