#include<stdio.h>
struct Student
{
    long int num;
    char name[10];
    char sex[3];
    char address[20];
 } stu={1001,"张三","男","哈尔滨"};
 int main()
 {
     printf("学号=%d\n姓名=%s\n性别=%s\n地址=%s\n",stu.num ,stu.name ,stu.sex ,stu.address );
 }

学号=1001
姓名=张三
性别=男
地址=哈尔滨

--------------------------------
Process exited after 0.01108 seconds with return value 0
请按任意键继续. . .

#include<stdio.h>
#include<string.h>

struct Student
{
    int num;
    char name[10];
    float score;
 } ;
 
 int main()
 {
     struct Student student1,student2;
     printf("请输入两位同学的信息：\n");
     scanf("%d %s %f",&student1.num ,student1.name ,&student1.score );
     scanf("%d %s %f",&student2.num ,student2.name ,&student2.score );
     printf("成绩最高的学生信息：\n");
     if(student1.score >student2.score )
     {
         printf("num=%d\nname=%s\nscore=%f\n",student1.num ,student1.name ,student1.score );
     }
     if(student1.score <student2.score )
     {
         printf("num=%d\nname=%s\nscore=%f\n",student2.num ,student2.name ,student2.score );
     }
 }

请输入两位同学的信息：
1001 张三 69
1002 李四 78
成绩最高的学生信息：
num=1002
name=李四
score=78.000000

--------------------------------
Process exited after 16.38 seconds with return value 0
请按任意键继续. . .

#include<stdio.h>
#include<string.h>

struct Person
{
    char name[20];
    int count;
 } ;
 
 int main()
 {
     struct Person person[3]={"张三",0,"李四",0,"王五",0};
     int i,j;
    char name[10];
    for(i=0;i<5;i++)

    {
        printf("请输入您选
的候选人：");
        scanf("%s",name);
        for(j=0;j<3;j++)
        {
            if(strcmp(name,person[j].name )==0)
            person[j].count ++;
        }
        
     }
     printf("统计成功！\n");
     for(i=0;i<3;i++)
     {
         printf("%s:%d\n",person[i].name ,person[i].count );
     }
 }

#include<stdio.h>
#include<string.h>

struct STD
{
    int number;
    char name[10];
    int score;
};
 
 int main()
 {
     struct STD stu[5]={{1001,"张三",65},{1002,"李四",75},{1003,"王五",67},{1004,"马六",87},{1005,"羊七",61}},temp;
     struct STD *p;
     p=stu;
     int i,j;
     for(j=0;j<4;j++)
     {
         for(i=0;i<4;i++,p++)
         {
            if(stu[i].score <stu[i+1].score)
           {
              temp=stu[i] ;
              stu[i] =stu[i+1] ;
              stu[i+1]=temp;
          }
        }
    }
     

     for(i=0;i<5;i++)
    {
         printf("%d\t%s\t%d\n",stu[i].number ,stu[i].name ,stu[i].score );
    }
}

1004    马六    87
1002    李四    75
1003    王五    67
1001    张三    65
1005    羊七    61

--------------------------------
Process exited after 0.007641 seconds with return value 13
请按任意键继续. . .

#include<stdio.h>
#include<string.h>

struct STD
{
    int num;
    char name[20];
    char sex[3];
    int score;
};
 
 int main()
{
    struct STD stu,*p;
    p=&stu;
    stu.num =1001;
    strcpy(stu.name ,"张三");
    strcpy(stu.sex ,"男");

    stu.score =76;
    printf("学号=%d\n姓名=%s\n性别=%s\n成绩=%d\n",stu.num ,stu.name ,stu.sex ,stu.score );
    printf("学号=%d\n姓名=%s\n性别=%s\n成绩=%d\n",p->num ,p->name ,p->sex ,p->score );
}

学号=1001
姓名=张三
性别=男
成绩=76
学号=1001
姓名=张三
性别=男
成绩=76

--------------------------------
Process exited after 0.007976 seconds with return value 36
请按任意键继续. . .

#include<stdio.h>
#include<string.h>

struct STD
{
    int num;
    char name[20];
    char sex[3];
    int score;
};
 
 int main()
{
    struct STD stu[3]={{1001,"张三","男",68},{1002,"小红","女",76},{1003,"小明","男",79}},*p;
    p=stu;
    printf("学号\t姓名\t性别\t成绩\n");
    for(;p<stu+3;p++)
    {

        printf("%d\t%s\t%s\t%d\n",p->num ,p->name ,p->sex ,p->score );
    }
}

学号    姓名    性别    成绩
1001    张三    男      68
1002    小红    女      76
1003    小明    男      79

--------------------------------
Process exited after 0.01121 seconds with return value 10485312
请按任意键继续. . .

#include <stdio.h>  
#define N 3  
struct Student  
{  
    int num;  
    char name[20];  
    float score[3];  
    float aver;  
};  
int main()
{
    void input(struct Student stu[]);
    struct Student max(struct Student stu[]);
    void print(struct Student stu);
    struct Student stu[N],*p=stu;
    input(p);
    print(max(p));
    return 0; 
}
void input(struct Student stu[])
{
    int i;
    printf("请输入各学生的信息：学号、姓名、三门学科的成绩：\n");
    for(i=0;i<N;i++)
    {
        scanf("%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].aver=(stu[i].score[0]+stu[i].score[1]+stu[i].score[2])/3.0;
    } 
}
struct Student max(struct Student stu[])
{
    int i,m=0;
    for(i=0;i<N;i++)
    if(stu[i].aver>stu[m].aver)m=i;
    return stu[m];
}
void print(struct Student stud)
{

    printf("\n成绩最高的学生是：\n");
    printf("学号：%d\n姓名：%s\n三门课成绩:%5.1f,%5.1f,%5.1f平均成绩:%6.2f\n",stud.num,stud.name,stud.score[0],stud.score[1],stud.score[2]);
}