第十二周作业

8-1

#include <iostream>using namespace std;struct date{int year;int month;int day;};struct {int num;char name[20];date birthday;char addr[30];}student={1001,"HMW",{1992,01,07},"shangtou"};int main(){cout<<student.num<<endl;cout<<student.name<<endl;cout<<student.birthday.year<<student.birthday.month<<student.birthday.day<<endl;cout<<student.addr<<endl;return 0;}

8-2

#include <iostream>using namespace std;struct date{int year;int month;int day;}a={1,2,3};date b;int main(){b=a;cout<<b.year<<endl;cout<<b.month<<endl;cout<<b.day<<endl;return 0;}

8-3

#include<iostream>using namespace std;struct student{int num;char name[20];float score;};int main(){student stu[3]={{1001,"Liu jin",75},{1002,"Li Lan",82},{1003,"Ma Kai",80}};student temp;for(int i=1;i<3;i++)  for(int j=0;j<=2-i;j++)  if(stu[j].score<stu[j+1].score)  {  temp=stu[j];stu[j]=stu[j+1];stu[j+1]=temp;  }    cout<<"Num"<<"    Name"<<"    Score"<<endl;for(int k=0;k<3;k++)cout<<stu[k].num<<"    "<<stu[k].name<<"    "<<stu[k].score<<endl;return 0;}

8-4

#include<iostream>using namespace std;struct student{int num;char name[20];float score;};int main(){student stu[3]={{1001,"Liu jin",75},{1002,"Li Lan",82},{1003,"Ma Kai",80}};student *p=stu;cout<<"Num"<<"\tName"<<"\t\tScore"<<endl;for(;p<stu+3;p++)cout<<(*p).num<<"\t"<<(*p).name<<"\t\t"<<(*p).score<<endl;return 0;}

8-5

#include<iostream>using namespace std;struct student{int num;char name[20];float score;};void print(student *p){cout<<(*p).num<<"\t"<<(*p).name<<"\t\t"<<(*p).score<<endl;}int main(){student stu[3]={{1001,"Liu jin",75},{1002,"Li Lan",82},{1003,"Ma Kai",80}};cout<<"Num"<<"\tName"<<"\t\tScore"<<endl;for(int i=0;i<3;i++){print(&stu[i]);}return 0;}

8-10

#include<iostream>using namespace std;struct student{int num;float score;student *next;};int n=0;student *creat(){student *head,*p1,*p2;head=NULL;p1=new(student);p2=p1;cout<<"请输入学生学号和成绩，当学号为0时，停止输入"<<endl;cin>>p1->num>>p1->score;  while(p1->num!=0)  {    n++;if(n==1)head=p1;else{p2->next=p1;p2=p1;}p1=new(student);cin>>p1->num>>p1->score;  }  delete p1;  p2->next=NULL;  return head;}void print(student *head){student *p;p=head;if(p==NULL)return;do{cout<<p->num<<"       "<<p->score<<endl;p=p->next;}while(p!=NULL);}student *del(student *head,int num){student *p1,*p2;if(head==NULL){cout<<"list null"<<endl;return head;}p1=head;while(num!=p1->num&&p1->next!=NULL){p2=p1;p1=p1->next;}if(num=p1->num){if(p1==head)head=p1->next;elsep2->next=p1->next;cout<<"delete: "<<num<<endl;n--;}elsecout<<num<<"not been found!"<<endl;return head;}student *insert(student *head,student *stud){student *p0,*p1,*p2;p1=head;p0=stud;   if(head==NULL)   {   head=p0;   p0=p1->next;   }   else   while((p0->num>p1->num)&&(p1->next!=NULL))   {   p2=p1;   p1=p1->next;   }   if(p0->num<p1->num)   {   if(head==p1)   head=p0;   else   p2->next=p0;       p0->next=p1;   }   else   {   p1->next=p0;   p0->next=NULL;   }   n++;   return head;}int main(){student *head=creat();cout<<"新建的链表为："<<endl    <<"学号\t成绩"<<endl;print(head);int num;cout<<"请输入要删除的学号：";cin>>num;head=del(head,num);cout<<"目前的链表为："<<endl;print(head);student *pt=new student;cout<<"请输入要插入学生的学号和成绩：";cin>>pt->num>>pt->score;head=insert(head,pt);cout<<"目前的链表为："<<endl;print(head);return 0;}

8-11

#include<iostream>using namespace std;union pw{int i;char ch[2];};int main(){cout<<"请输入一个整数，若大于127则退出"<<endl;pw password;while(1){cin>>password.i;if(password.i>127)break;cout<<password.i<<"对应的字符为："<<password.ch <<endl;}return 0;}

8-12

#include<iostream>using namespace std;int main(){enum en{plus,minus,times}p;int x,y;cout<<"请输入两个数："<<endl;cin>>x>>y;p=plus;while(p<=times){switch(p){case plus:cout<<x<<" + "<<y<<" = "<<x+y<<endl;break;    case minus:cout<<x<<" - "<<y<<" = "<<x-y<<endl;break;    case times:cout<<x<<" * "<<y<<" = "<<x*y<<endl;break;}int i=(int)p;p=en(++i);}return 0;}

习题1

#include<iostream>using namespace std;struct student{int num;char ch[10];int score1;int score2;int score3;}me={1122,"黄明武",97,97,97};void print();int main(){print();return 0;}void print(){cout<<me.num<<"\t";cout<<me.ch<<"\t";cout<<me.score1<<"\t";cout<<me.score2 <<"\t";cout<<me.score3<<"\t"<<endl;}

习题2

#include<iostream>using namespace std;struct student{char aa[20];char ch[20];int mathscore;int englishiscoer;int chinesescore;};void print(student *b){    cout<<"学号"<<"\t\t"<<"姓名"<<"\t"<<"数学成绩"<<"\t"<<"英语成绩"<<"\t"<<"语文成绩"<<endl;cout<<b->aa<<"\t"<<b->ch <<"\t"<<b->mathscore<<"\t\t"<<b->englishiscoer<<"\t\t"<<b->chinesescore<<endl;}int main(){student a[1]={"201211632207","黄明武",97,98,97};print(a);return 0;}

 

习题3

 

#include<iostream>using namespace std;union change{int a;char b;}asc;int main (){cout<<"请输入要转换成ASCII码的整数："<<endl;cin>>asc.a;cout<<"对应的ASCII码为："<<asc.b <<endl;return 0;}

习题4

#include <iostream>using namespace std;struct worker{ long num; char name[20]; double basic_wage; double job_wage;};int main(){    worker work[10];    for(int i=0;i<10;i++){cout<<"Enter the num:";cin>>work[i].num;cin.get();cout<<"Enter the name:";cin.get(work[i].name,20);cin.get();cout<<"Enter the basic wages:";cin>>work[i].basic_wage;cin.get();cout<<"Enter the job wages:";cin>>work[i].job_wage;cin.get();}double sum_wage[10];double min=work[0].basic_wage+work[0].job_wage;int n=0;for(int i=1;i<10;i++){sum_wage[i]=work[i].basic_wage+work[i].job_wage;if(sum_wage[i]<min){min=sum_wage[i];n=i;}}cout<<"The minimum wage workers:"<<endl;cout<<"Name:"<<work[n].name<<endl;cout<<"Num:"<<work[n].num<<endl;cout<<"Basic wages:"<<work[n].basic_wage<<endl;cout<<"Job wages:"<<work[n].job_wage<<endl;    return 0;}

5

#include <iostream>using namespace std;struct time{int year;int month;int day;};int main(){    cout<<"请输入一个时间（年，月，日）：";    time a_time;    cin>>a_time.year>>a_time.month>>a_time.day;    int day_year;    if((a_time.year%4==0&&a_time.year%100!=0)||a_time.year%400==0){switch(a_time.month){case 1:day_year=a_time.day;break;case 2:day_year=31+a_time.day;break;case 3:day_year=60+a_time.day;break;case 4:day_year=91+a_time.day;break;case 5:day_year=121+a_time.day;break;case 6:day_year=152+a_time.day;break;case 7:day_year=182+a_time.day;break;case 8:day_year=213+a_time.day;break;case 9:day_year=244+a_time.day;break;case 10:day_year=274+a_time.day;break;case 11:day_year=305+a_time.day;break;case 12:day_year=335+a_time.day;break;}}else{switch(a_time.month){case 1:day_year=a_time.day;break;case 2:day_year=31+a_time.day;break;case 3:day_year=59+a_time.day;break;case 4:day_year=90+a_time.day;break;case 5:day_year=120+a_time.day;break;case 6:day_year=151+a_time.day;break;case 7:day_year=181+a_time.day;break;case 8:day_year=212+a_time.day;break;case 9:day_year=243+a_time.day;break;case 10:day_year=273+a_time.day;break;case 11:day_year=304+a_time.day;break;case 12:day_year=334+a_time.day;break;}}    cout<<"该日是本年中第 "<<day_year<<" 天"<<endl;    return 0;}

6

#include <iostream>using namespace std;struct student{long num;float score;student *next;};student *creat(int &n);void show(student *head);student *merger(student *a,student *b);student *sort(student *a);int main(){    student *one,*two;    int n1=0,n2=0;    cout<<"请输入第一个链表："<<endl;    one=creat(n1);cout<<"请输入第二个链表："<<endl;    two=creat(n2);    cout<<"第一个链表："<<endl;    show(one);    cout<<"第二个链表："<<endl;    show(two);    cout<<endl;    one=merger(one,two);    one=sort(one);    cout<<"处理后："<<endl;    show(one);return 0;}student *creat(int &n){student *head,*p1,*p2;head=NULL;p1=new(student);p2=p1;cout<<"请输入，当学号为0时，停止输入"<<endl;cout<<"请输入第 "<<n+1<<" 个学生的学号：";cin>>p1->num;cout<<"请输入其成绩：";cin>>p1->score;while(p1->num!=0){n++;if(n==1)head=p1;else{p2->next=p1;p2=p1;}p1=new(student);cout<<"请输入第 "<<n+1<<" 个学生的学号：";cin>>p1->num;cout<<"请输入其成绩：";cin>>p1->score;}delete p1;p2->next=NULL;return head;}void show(student *head){student *p;p=head;if(p==NULL)return;cout<<"学号\t成绩\t"<<endl;do{cout<<p->num<<"        "<<p->score<<endl;p=p->next;}while(p!=NULL);}student *merger(student *a,student *b){student *p;p=a;while(p->next!=NULL)p=p->next;if(b==NULL)return a;p->next=b;return a;}student *sort(student *a){struct student *first; /*排列后有序链的表头指针*/struct student *tail; /*排列后有序链的表尾指针*/struct student *p_min; /*保留键值更小的节点的前驱节点的指针*/struct student *min; /*存储最小节点*/struct student *p; /*当前比较的节点*/first=NULL;while(a!=NULL){for(p=a,min=a;p->next!=NULL;p=p->next){if(p->next->num<min->num){p_min=p;min=p->next;}}if(first==NULL){first=min;tail=min;}else{tail->next=min;tail=min;}if(min==a){a=a->next;}else{p_min->next=min->next;}}if(first!=NULL){tail->next=NULL;}a=first;return a;}

10

#include <iostream>#include <string>#include <iomanip>using namespace std;struct Grade{int s1,s2,s3;float aver;};struct StudentRec{int num;string name;Grade s;};typedef struct StudentRec STUDENT;void inputstu(STUDENT stu[],int);void sort(STUDENT stu[],int);int main(){    STUDENT stu[10];    int i;    inputstu(stu,10);    sort(stu,10);    cout<<"按照平均成绩排序后的学生信息如下："<<endl;    cout<<"学号   姓名   数学   英语   语文"<<endl;    for(i=0;i<10;i++){cout<<stu[i].num<<'\t'<<stu[i].name<<'\t'<<stu[i].s.s1<<'\t'<<stu[i].s.s2<<'\t'<<stu[i].s.s3<<'\t'<<'\t'<<stu[i].s.aver<<endl;}    return 0;}void inputstu(STUDENT stu[],int n){cout<<"请输入"<<n<<"个学生的学号、姓名以及数学、英语、语文三门课程的成绩"<<endl;cout<<"学号   姓名   数学   英语   语文"<<endl;for(int i=0;i<n;i++){cin>>stu[i].num>>stu[i].name>>stu[i].s.s1>>stu[i].s.s2>>stu[i].s.s3;stu[i].s.aver=(stu[i].s.s1+stu[i].s.s2+stu[i].s.s3)/3;}}void sort(STUDENT stu[],int n){STUDENT newstu;for(int i=0;i<n-1;i++)for(int j=0;j<n-1-i;j++){if(stu[j].s.aver>stu[j+1].s.aver){newstu=stu[j];stu[j]=stu[j+1];stu[j+1]=newstu;}}}