抄写例题作业

#include<stdio.h>
#include<stdlib.h>
main()
{
    struct student
    {int num;//学号为整形  
    char name[20];//姓名为字符串  
    char sex;//性别为字符串 
    int age;//年龄为整形 
    float score;
    char addr[30]; 
    };
 } 





--------------------------------
Process exited after 0.01214 seconds with return value 1
请按任意键继续. . .

这道题是基础 没啥说的

9.2

#include<stdio.h>
#include<stdlib.h>
int main()
{struct Student
 {int num;
char name[20];
float score;
}; 
struct Student student1={10101,"LLL",89};
struct Student student2={10103,"AAA",98};
if(student1.score>student2.score)  //if语句 
printf("%d,%s,%f",student1.num,student1.name,student1.score);
else if(student1.score<student2.score)
printf("%d,%s,%f",student2.num,student2.name,student2.score);
else
{
printf("%d,%s,%f",student1.num,student1.name,student1.score);
printf("%d,%s,%f",student2.num,student2.name,student2.score);
}
return 0;
}


10103,AAA,98.000000
--------------------------------
Process exited after 0.01196 seconds with return value 0
请按任意键继续. . .

这道题还不算难,但用了if语句,巩固一下知识.

9.3

#include<string.h>
#include<stdio.h>
struct Person//声明结构体类型 struct person 
{char name[20];//候选人姓名 
int count;//候选人的票数 
 } leader[3]={"yu",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];
 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++;  //if语句 
 }
 printf("\nResult:\n");
 for(i=0;i<3;i++)
 printf("%5s:%d\n",leader[i].name,leader[i].count);
 return 0;
  }



yu
zhang
Sun
yu
yu
zhang
Sun
zhang
zhang
zhang 3

Result:
   yu:3
zhang:5
  Sun:2

--------------------------------
Process exited after 60.11 seconds with return value 0
请按任意键继续. . .

这题挺有意思,第一次接触,照着书抄完,发现输入的时候很逗,投票......错误出现过,但看底下提示,貌似还可以吧

9.4

#include<stdio.h>
#include<stdlib.h> 
struct Student//声明结构体类型 struct person 
{
int num;
char name[20];
float score;
};
int main()
{
struct Student stu[5]={{10101,"mm",78},{10103,"qq",98},{10106,"ee",86},{10108,"cc",73},{10110,"ff",100}};//定义结构体数组并初始化
struct Student temp;
const int n=5;
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)  //if 语句 
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("%d,%s,%d",stu[i].num,stu[i].name,stu[i].score);
printf("\n");
return 0;
}


the order is:
10110,ff,010103,qq,010106,ee,010101,mm,010108,cc,0

--------------------------------
Process exited after 0.01435 seconds with return value 0
请按任意键继续. . .

这题给我搞得恶心了 ,打字很累........难度还可以吧,用了for循环.

9.5

#include<stdio.h>
#include<stdlib.h> 
struct Student//声明结构体类型 
{
int num;
char name[20];
char sex;
int age;
};
struct Student stu[3]={{10101,"yu",'M',78},{10103,"pp",'M',98},{10106,"ll",'M',86}};//定义结构体数组并初始化 
main()
{struct Student *p;//定义指向struct student类型数据的指针变量p 
printf("NO.Name   sex age\n");
for(p=stu;p<stu+3;p++)   //for 循环 
printf("%d,%s,%c,%d",p->num,p->name,p->sex,p->age);
return 0;
}

NO.Name   sex age
10101,yu,M,7810103,pp,M,9810106,ll,M,86
--------------------------------
Process exited after 0.06786 seconds with return value 0
请按任意键继续. . .

这道题学习了结构指针,三种打印方法。发生了一个错误,注释竟然忘了加//  ..........   此题改动了.

9.6

#include<stdio.h>
#include<string.h>
main()
{struct Student  //结构
{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;
printf("NO.:%ld\nname:%s\nsex:%c\nscore:%d\n",stu_1.num,stu_1.name,stu_1.sex,stu_1.score);
printf("NO.:%ld\nname:%s\nsex:%c\nscore:%d\n",(*p).num,(*p).name,(*p).sex,(*p).score);
return 0;
}

NO.:10101
name:li lin
sex:M
score:0
NO.:10101
name:li lin
sex:M
score:0

--------------------------------
Process exited after 0.01277 seconds with return value 0
请按任意键继续. . .

9.7

#include <stdio.h>  
#define N 3  //定义 
struct Student   //结构体 
{  
    int num;  
    char name[20];  
    float score[3];  
    float aver;  
};  
int main()
{
    void input(struct Student stu[]);//声明函数 
    struct Student max(struct Student stu[]);
    void print(struct Student stu);
    struct Student stu[N],*p=stu;
    input(p);//调用函数 
    print(max(p));//返回指针 
    return 0; 
}
void input(struct Student stu[])  //定义 
{
    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]);
}



请输入各学生的信息:学号、姓名、三门学科的成绩:
13 yu 100 90 95
14 sa 90 90 90
15 qq 90 85 95

成绩最高的学生是:
学号:13
姓名:yu
三门课成绩:100.0, 90.0, 95.0平均成绩:  0.00

--------------------------------
Process exited after 90.8 seconds with return value 0
请按任意键继续. . .

 

总结一下,这些题一道比一道难,尤其是最后一个,受不了啊,头疼。学到了一些知识,用了这么长时间.......虽然是抄写,但还是出现了很多错误,有的是因为没看见,有的是混淆概念。

还是那句话,希望课上老师能领着大家做做题,大家做完题能讲解一下。下面上截图。

 总结一下 ,我想说这是个什么玩意,虽然学到点东西,但这也太麻烦了吧。真心累。老师,下次作业不用他可以吗.........

忽然发现第一题写绿书上的了,尴尬,容我补上。

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




NO.;10101
name:li lin
sex:M
address:123 beijing Road

--------------------------------
Process exited after 0.029 seconds with return value 0
请按任意键继续. . .

ok  可以了

posted @ 2017-04-10 17:15  哲夜  阅读(475)  评论(0编辑  收藏  举报