抄抄抄

9.1

#include<stdio.h>
int main()
{struct Student       //声明结构体类型struct Student
  {
  long int num;       //以下四行为结构体的成员
  char name[20];
  char sex;
  char addr[20];
}w={01,"Yu Jinchi",'M',"Beijing Road"};    //定义结构体变量a并初始化

printf("NO.:%ld\nname:%s\nsex:%C\naddress:%s\n",w.num,w.name,w.sex,w.addr);       //输出结构体所有成员，也就是学生的所有信息

return 0;
}

NO.:1
name:Yu Jinchi
sex:M
address:Beijing Road

--------------------------------
Process exited after 0.104 seconds with return value 0
请按任意键继续. . .

9.2

#include<stdio.h>
int main()
{ struct Student        //声明结构体类型  struct Student
  {
    int num;
    char name[20];
    float score;
  }student1,student2;            //定义两个结构体变量student1，student2
scanf("%d %s %f",&student1.num,student1.name,&student1.score);     //输入学生1的数据
scanf("%d %s %f",&student2.num,student2.name,&student2.score);     //输入学生1的数据

printf("The higher score is:\n");        //输出最高分

if(student1.score>student2.score)       //用if语句进行大小比较，输出分数较大者
   printf("%d %s %6.2f\n",student1.num,student1.name,student1.score);
else if(student1.score<student2.score)
   printf("%d %s %6.2f\n",student2.num,student2.name,student2.score);
else
 {
   printf("%d %s %6.2f\n",student1.num,student1.name,student1.score);
   printf("%d %s %6.2f\n",student2.num,student2.name,student2.score);
 }
return 0;
}
yujinchi 666
pipixia  665
The higher score is:
yujinchi 666.00

--------------------------------
Process exited after 53.43 seconds with return value 0
请按任意键继续. . .

9.3

#include<stdio.h>
#include<string.h>
  struct Person           //声明结构体类型struct Person
{ 
    char name[20];       //候选人姓名
    int count;           //候选人得票数
} leader[3]={"Li",0,"Zhang",0,"Sun",0};   //定义结构体数组并初始化
int main()
 { int i,j;
   char leader_name[20];             //定义字符数组
 for(i=1;i<=10;i++)
   {
    scanf("%s",leader_name);         //输入所选的候选人姓名
    for(j=0;j<3;j++)
    if(strcmp(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;
 
  }

Li
Li
Sun
Zhang
zhabg
Sun

Li
Sun
Zhang
Li

Result:
   Li:4
Zhang:2
  Sun:3

--------------------------------
Process exited after 77.16 seconds with return value 0
请按任意键继续. . .

9.4

#include<stdio.h>
struct Student                      声明结构体类型struct Student
  {int num;
  char name[20];
  float score;
  };
int main()
{    
   struct Student stu[5]={{10101,"Zhang",78},{10103,"Wang",98.5},{10106,"Li",86},{10108,"Ling",73.5},{10110,"Sun",100}};//定义结构体数组并初始化
   struct Student temp;    //定义结构体变量temp，用作交换时的临时变量
   const int n=5;         //定义常变量n
   int i,j,k;
   printf("The order is:\n");
   for(i=0;i<n-1;i++)
   {k=i;
   for(j=i+1;j<n;j++)
     if (stu[j].score>stu[k].score)        //用if语句进行程序的比较
     k=j;
     temp=stu[k];stu[k]=stu[i];stu[i]=temp;     //stu[k]和stu[i]元素互换
   }
  for (i=0;i<n;i++)
  printf("%6d%8s%6.2f\n",stu[i].num,stu[i].name,stu[i].score);
  printf("\n");
  return 0;
}

The order is:
    Sun100.00
   Wang 98.50
     Li 86.00
  Zhang 78.00
   Ling 73.50


--------------------------------
Process exited after 0.1687 seconds with return value 0
请按任意键继续. . .

9.5

#include<stdio.h>
#include<string.h>
int main()
{struct Student
 {long num;
  char name[20];
  char sex;
  float score; 
 };
 struct Student stu_1;           //定义struct Student类型的变量stu_1
 struct Student*p;            //定义指向struct Student类型数据的指针变量p
 p=&stu_1;                    //p指向stu_1
 stu_1.num=10101;            //对结构体变量的成员赋值
 strcpy(stu_1.name,"Li Lin");   //用字符串复制函数给stu_1.name赋值
 stu_1.sex='M';
 stu_1.score=89.5;
 printf("No.:%ld\nname:%s\nsex:%c\nscore:%5.1f\n",stu_1.num,stu_1.name,stu_1.sex,stu_1.score) ;
 printf("\nNo.:%ld\nname:%s\nsex:%c\nscore:%5.1f\n",(*p).num,(*p).name,(*p).sex,(*p).score) ;             //输出结果
 return 0;
}

No.:10101
name:Li Lin
sex:M
score: 89.5

No.:10101
name:Li Lin
sex:M
score: 89.5

--------------------------------
Process exited after 0.1887 seconds with return value 0
请按任意键继续. . .

9.6

#include<stdio.h>
struct Student               //声明结构体类型struct Student
{int num;
char name[20];
char sex;
int age;
 } ;
 struct Student stu[3]={{10101,"Mi Gui",'M',21 },{10102,"Mai Pipixia",'M',36},{10104,"Yu Kang",'F',27}};   //定义结构体数组并初始化
 
 int main()
 {struct Student *p;       //定义指向struct Student结构体变量的指针变量
 printf("No.Name               sex  age\n");
 for(p=stu;p<stu+3;p++)
   printf("%5d %-15s %2c %4d\n",p->num,p->name,p->sex,p->age);      //输出结果
   
   return 0;
 
 }

No.Name sex age
Mi Gui           M   21
Mai Pipixia      M   36
Yu Kang          F   27

--------------------------------
Process exited after 0.1269 seconds with return value 0
请按任意键继续. . .

9.7

#include<stdio.h>
#define N 3            //学生数为3
struct Student         //建立结构体类型struct Student
{ int num;             //学号
char name[20];         //姓名
float score[3];        //3门课成绩
float aver;            //平均成绩
};

int main()
{  void input(struct Student stu[]);         //函数声明
 struct Student max(struct Student stu[]);   //函数声明
 void print(struct Student stu);             //函数声明
 struct Student stu[N],*p=stu;               //定义结构体数组和指针
 input(p);                          //调用input函数
 print(max(p));                     //调用print函数，以max函数的返回值作为实参
 return 0;
}
void input (struct Student stu[])          //定义input函数
{int i;
printf("输入各学生信息：学号，姓名，三科成绩：\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]);    //输入数据
 stu[i].aver=(stu[i].score[0]+stu[i].score[1]+stu[i].score[2])/3.0;            //求平均成绩
}
}
struct Student max (struct Student stu[])        //定义max函数
{int i,m=0;                 //用m存放成绩最高的学生在数组中的序号
for(i=0;i<N;i++)
 if(stu[i].aver>stu[m].aver)m=i;      //找出平均成绩最高的学生在数组中的序号
 return stu[m];                       //返回包含该生信息的结构体元素
}
void print(struct Student stud)       //定义print函数
{printf("\n成绩最高的学生是：\n");
 printf("学号：%d\n姓名:%s\n三科成绩：%5.1f，%5.1f,%5.1f\n平均成绩：%6.2f\n",stud.num,stud.name,stud.score[0],stud.score[1],stud.score[2],stud.aver);

}

输入各学生信息：学号，姓名，三科成绩：
Mi 15 32 14
Po 56 10 03
Mi 15 32.5 14

成绩最高的学生是：
学号：1
姓名:Po
三科成绩： 56.0， 10.0,  3.0
平均成绩： 23.00

--------------------------------
Process exited after 95.79 seconds with return value 0
请按任意键继续. . .

总结 通过翻看例题把这一部分内容又重新复习了一遍，把一些不会的内容或者不熟的内容都巩固了起来。