C程序设计习题与实验教程参考(习题部分)解读

第1章归纳一、选择题题号

1

2

3

4答案

B

B

B

A二、填空题1．主或main2．#include<iostream.h>或#include””3．①编译②连接（构件）4．{}5．；6．①.cpp②.obj③.exe三、编程题#include<iostream.h>voidmain(){cout<<"我的姓名是XX，"<<’\n’<<”我的学号为XXX”<<endl;}第2章数据种类与表达式一、选择题题号123456789答案AADCCBACC题号101112131415161718答案ADDDDBCBB勘误：3.其中“a=(m+n,m--n);”改为“a=(m+n,m-n);”二、填空题1．double2．3．①fabs()②4．?:5．06．x>5&&!(x%2)或x>5&&x%2!=07．true或18．b%a==0&&c%a==09．(float)x或float(x)10．11．①1②212．①4②5勘误：a和b的值分别为①、②。13．①20②32③32④16⑤2014．①A②B15．①3②116．17．1318．4三、编程题1．互换两个整数的地址#include<iostream.h>voidmain(){intx,y,t;cin>>x>>y;cout<<x<<’t’<<y<<endl;t=x;x=y;y=t;cout<<"互换后的两个数为："<<x<<’t’<<y<<endl;}2．求三角形面积#include<iostream.h>#include<math.h>voidmain(void){inta,b,c;doubles,area;cout<<"输入三角形三边长a,b,c:"<<endl;cin>>a>>b>>c;s=(a+b+c)/2.0;area=sqrt(s*(s-a)*(s-b)*(s-c));cout<<"三角形面积为:"<<area<<endl;}第3章流程控制语句一、选择题题号12345678910答案CBBDDCCBCB题号11121314151617181920答案DACADCDBBA题号21222324252627282930答案ACBCABDADD勘误：3.A选项改为“if(x>3)if(y>5)z=6;elsez=7”其中“合法的”改为“不合法的”二、填空题1．switch2．字符型3．44．①5②3③y=05．1,6．5,y=-87．2,3,y=58．3,09．4,0,B10．1,2,311．5,0,D12．0,5,5013．①1②514．*15．①@@###②###16．012340123417．357111318．319．①y1*y2>0②x1=x,y1=3*x1*x1*x1-5*x1+13③x2=x20．①n<999②b=n/10%10③(a+b+c)%5==0勘误：“各个数位的数字之和等于5的整数”改为“各位数字之和是5的倍数的整数”21．①12②1522．(100-cock-hen)%3==0)勘误：for(cock=0;cock<=20;cock++)for(hen=0;hen<=33;hen++)23．①

n++

②r>eps24．①

isprime=1

②j>125．①

intr=1

②break26．①

x<=200

②x%2==027．①28．①

c!=''s=0

②c>='A'&&c<='Z'||c>='a'&&c<='z'②t+=i

③c=cin.get()勘误：“t=1”改为“t=0”29．①s2=1②n③s1+=n%1030．①9②min>s③n/=10三、编程题1．从大到小排列3个整数#include<iostream.h>voidmain(){inta,b,c,d;cin>>a>>b>>c;if(a<b){d=a;a=b;b=d;}if(a<c){d=a;a=c;c=d;}if(b<c){d=b;b=c;c=d;}cout<<a<<'\t'<<b<<'\t'<<c<<'\n';}2．100~300满足条件的数#include<iostream.h>voidmain(){intk=0;for(inti=101;i<300;i+=2)if((i*i)%6==3){cout<<i<<'\t';k++;if(k%5==0)cout<<'\n';}cout<<'\n';}3．逆序显示16进制数#include<iostream.h>voidmain(){inta,k,n;cin>>a;k=a;while(k){n=k%16;k/=16;switch(n){case10:cout<<'A';break;case11:cout<<'B';break;case12:cout<<'C';break;case13:cout<<'D';break;case14:cout<<'E';break;case15:cout<<'F';break;default:cout<<n;}}cout<<'\n';}第4章数组一、选择题题号1234567891011答案DDBBBCDBABB题号1213141516171819202122答案DCBADBAABCC勘误：其中“s3[20]=”abc””改为“s3[20]=”abc””（字符c后有一个空格）二、填空题1．①3②242．首地址3．①i②i+j③i/7④i%7⑤i*7+j4．①7②8③7④505．①字符（char）型②cin.getline(str,80);6．1234567．FMBS勘误：“for(inti=0;i<4;i++,p++)cout<<*p[i];”改为“for(inti=0;i<4;i++)cout<<*s[i];”8．①a：5d：1e：4f：1g：1②i：1l：1m：1o：3r：3③s：2u：1y：39．①Itis4:30pm.②I③43010．①<100:3②<200:2③<300:5④<400:2⑤<500:311．D8012．①500②800③90013．①26②2014．①s2+31②n③t%2+'0'④!strcmp(s1,p2)15．①num[i++]②s=0③flag=1④j<=k16．①i<len1②j>=len2③b[k]=b[k-1]④++i%5==017．①pa>=a&&pb>=b②j+k+carry③ps++④p<ps18．①t[n++]②continue③t[k+1]=t[k]④n++19．①*p1②*p1++③p1++,p2++④*p1='\0'20．①n/10%10②i==j||j==k||i==k③i*i==n④(i+1)%5==021．①char*p3②*p1>='A'&&*p1<='Z'||*p1>='a'&&*p1<='z'③p2++④char(*p4)[20]22．①&a[i]②*p[k]<*p[j]③int*t④*p[i]三、编程题1．互换一维数组中的最大元素与最小元素的地址#include<iostream.h>voidmain(void){inta[6]={18,16,19,15,11,8};inti,max,min,j,k,t;cout<<"原数组为：\n";for(i=0;i<6;i++)cout<<a[i]<<'\t';cout<<endl;for(j=k=0,max=min=a[0],i=1;i<6;i++){if(max<a[i])max=a[i],j=i;if(min>a[i])min=a[i],k=i;}t=a[j],a[j]=a[k],a[k]=t;cout<<"互换后的数组为：\n";for(i=0;i<6;i++)cout<<a[i]<<'\t';cout<<endl;}2．二维数组右移一列#include<iostream.h>#defineROW3#defineCOL4voidmain(void){inta[ROW][COL]={1,2,3,4,5,6,7,8,9,10,11,12},i,j,t;cout<<"搬动前的数组为：\n";for(i=0;i<ROW;i++){for(j=0;j<COL;j++)cout<<a[i][j]<<'\t';cout<<'\n';}for(i=0;i<ROW;i++){t=a[i][COL-1];for(j=COL-1;j>0;j--)a[i][j]=a[i][j-1];a[i][j]=t;//a[i][0]=t;}cout<<"搬动后的数组为：\n";for(i=0;i<ROW;i++){for(j=0;j<COL;j++)cout<<a[i][j]<<'\t';cout<<'\n';}}3．统计字符串中种类字符的个数#include<iostream.h>voidmain(){charstr[50],*p=str;intcon=0,num=0,eng=0,oth=0;cout<<"请输入一个字符串：";cin.getline(str,50);while(*p){if(*p<32)con++;elseif(*p>='0'&&*p<='9')num++;elseif(*p>='A'&&*p<='Z'||*p>='a'&&*p<='z')eng++;elseoth++;p++;}cout<<str<<"中有控制字符"<<con<<"个，数字字符"<<num<<"个，英文字母"<<eng<<"个，其他字符"<<oth<<"个。\n";}4．一维数组插入有序二维数组#include<iostream.h>#include<iomanip.h>#defineROW4#defineCOL3voidmain(){inta[ROW][COL]={{1,3,2},{4,6,8},{8,9,10}},b[COL]={2,7,1};inti,j;cout<<"插入前的数组为：\n";for(i=0;i<ROW-1;i++){for(intj=0;j<COL;j++)cout<<setw(5)<<a[i][j];cout<<endl;}for(i=0;i<COL;i++){for(j=ROW-1;j>0;j--)if(a[j-1][i]>b[i])a[j][i]=a[j-1][i];elsebreak;a[j][i]=b[i];}cout<<"插入后的数组为：\n";for(i=0;i<ROW;i++){for(intj=0;j<COL;j++)cout<<setw(5)<<a[i][j];cout<<endl;}}5．二维数组正数和负数的均值#include<iostream.h>voidmain(void){intb[3][5]={{1,12,3,0,-2},{7,-12,-13,18},{-20,0,9,-5,7}};floatave1=0,ave2=0;inti,j,count1=0,count2=0,(*p)[5]=b;for(i=0;i<3;i++)for(j=0;j<5;j++){if(p[i][j]>0){ave1+=b[i][j];count1++;}if(*(*(p+i)+j)<0){ave2+=b[i][j];count2++;}}cout<<"正数的平均值为"<<ave1/count1<<"，负数的平均值为"<<ave2/count2<<endl;}6．查找一维数组中的元素#include<iostream.h>voidmain(){floata[10]={3,5,8,1,7,9,10,2,6,4};floatk,*p=a;cout<<"输入要查找的元素：";cin>>k;inti,index=-1;for(i=0;i<10;i++){if(*p==k){index=i;break;}p++;}if(index==-1)cout<<k<<"没有出现在数组中。\n";elsecout<<k<<"是数组中下标为"<<index<<"的元素。\n";}7．删除字符串中的指定字符#include<iostream.h>#include<string.h>voidmain(){charstring[100],ch,*p=string;cout<<"请输入字符串：\n";cin.getline(p,100);cout<<"请输入要删除的字符：";cin.get(ch);while(*p){if(*p==ch)strcpy(p,p+1);elsep++;}cout<<"删除字符"<<ch<<"后的字符串为：\n";cout<<string<<endl;}第5章函数与编译预办理一、选择题题号12345678910答案DCDABCDDCC题号11121314151617181920答案ABCCCADCDC勘误：D选项“和种类均不同样”改为“或种类不同样”二、填空题1.①值传达②地址传达③引用传达inline3．①文件包含②宏定义③条件编译4.①形参名②函数先使用后定义5.①形式参数②实质参数③参数种类④参数个数⑤参数序次6.①void②int①静态储藏地域②08.①void（*fp）(char*s,inta[])②fp=f;或(*fp)=f;①sum1=5②sum2=-1510.①②s1=0,s2=4,s3=2③5011.①11②1331③3112.①0101②010111③013.①12345②3214514.①-414②-1814③-321415.①x=5,y=3②y=1016.①15-1121410②26714332017.①1a②3b③5c18.①i+1②k=j③str[k]=str[k+1]④del(s)19.①i++②a[j]=x③add_sort(b,x,n)④n20.①*sum②n/=10③fun(i,&s)④i%11==0&&s==1321.①k=j②a[i]%2!=0③count++④on_off(a,LAMP,CHILD)22.①str[i]②substr[k+1]=='\0'③k++④f(s1,s2)三、编程题字符排序#include<iostream.h>voidsort_char(char*str){char*p1,*p2,*q;charc;for(p1=str;*(p1+1)!='\0';p1++){q=p1;for(p2=p1+1;*p2!='\0';p2++)if(*p2<*q)q=p2;if(q!=p1){c=*p1;*p1=*q;*q=c;}}}voidmain(){chars[]="gabhdecf";cout<<"原字符串为:"<<s<<endl;sort_char(s);cout<<"排序后的字符串为:"<<s<<endl;}互换前后奇数地址的元素#include<iostream.h>#include<string.h>voidfun(char*str){inti,j;charc;if(strlen(str)<3)return;if(strlen(str)%2==0)j=strlen(str)-1;elsej=strlen(str);for(i=1;i<j;i+=2,j-=2){c=str[i];str[i]=str[j];str[j]=c;}}voidmain(){chars[]="ggoiromndno";cout<<"原字符串为:"<<s<<endl;fun(s);cout<<"互换后的字符串为:"<<s<<endl;}查找自反数#include<iostream.h>#include<string.h>intfun(intn){inta[50];inti=0,k=n;while(k){a[i]=k%10;k/=10;i++;}i--;for(intj=0;j<i;j++,i--)if(a[j]!=a[i])break;if(j>=i)return1;elsereturn0;}voidmain(){intbase,num;cout<<"请输入基数base和需要查找的自反数的个数num:"<<endl;cin>>base>>num;intn=base,count=0;while(count<num){if(fun(n)){cout<<n<<'\t';count++;if(count%5==0)cout<<endl;}n++;}cout<<endl;}第6章构造体与简单链表一、选择题题号123456789答案DCBBBCDAC题号101112131415161718答案DDBACBBCB勘误：其中“不正确”改为“有语法错误”二、填空题构造体变量各成员所占内存长度之和2.①typedefnodeNODE;②NODEs1,s2;delete动向new或deletep->next->next==NULL7.①p==head②p->next==NULL③p0->next=p->next④deletep⑤p0->next=p1⑥p1->next=p8.20129.1343110.gh11.①a[i].con=0②a[i].con++③continue12.①h1->data>=h2->data②h1!=NULL&&h2!=NULL③p->next=h1④h=merge(h1,h2)13.①head->next=p1②returnhead③head->next=p2④p2=p2->next14.①newNode②p->next=top③top->next④deletep15.①p②returnh③p=newND④p->next=h16.①node*h②h2->next③temp④h217.①p=p->next②p1->next=p③h=h->next④p->next=h118.①p->next=head②p1=p1->next③pmax1->next=pmax->next④DeleteMax(head)三、编程题1．建立链表，求输出总分最高和最低的学生#include<iostream.h>structnode{intdata;node*next;};node*fun(node*head){node*p=head,*even=0,*old=0,*p1=0,*p2=0;if(head==NULL)returnhead;while(p){if(p->data%2)//改为if(p->data%2)if(old==0){old=p,p1=p;}else{p1->next=p;p1=p;}elseif(even==0){even=p;p2=p;}else{p2->next=p;p2=p;}p=p->next;}if(old)p1->next=0;if(even){head=even;p2->next=old;}elsehead=old;returnhead;}voidprint(node*p)//输出链表{while(p){cout<<p->data<<'\t';p=p->next;}cout<<'\n';}voidmain(void){node*head=NULL,*p,*p1;inta;cout<<"输入数据，等于-1时，输入结束！\n";cin>>a;while(a!=-1){p=newnode;p->data=a;if(head==0){head=p;p1=p;}else{p1->next=p;p1=p;}cout<<"请输入数据:";cin>>a;}p->next=0;print(head);head=fun(head);print(head);}2．建立链表，输出总分最高和最低的学生#include<iostream.h>//#defineNULL0structNODE{intid;charname[10];floatc,maths,english;NODE*next;};NODE*Create(intn){NODE*p1,*p2,*h=0;inti=0;while(i<n){p1=newNODE;cin>>p1->id>>p1->name>>p1->c>>p1->maths>>p1->english;if(h==0){h=p1;p2=p1;}else{p2->next=p1;p2=p1;}i++;}p2->next=0;returnh;}voidprint(NODE*h){NODE*p;p=h;NODE*max,*min;max=min=h;floatsum=0;while(p!=0){sum=(p->c+p->maths+p->english);if(sum>(max->c+max->maths+max->english))max=p;if(sum<(min->c+min->maths+min->english))min=p;p=p->next;}cout<<"最高分："<<max->id<<'\t'<<max->name<<'\t'<<max->c<<'\t'<<max->maths<<'\t'<<max->english<<endl;cout<<"最低分："<<min->id<<'\t'<<min->name<<'\t'<<min->c<<'\t'<<min->maths<<'\t'<<min->english<<endl;cout<<endl;}voiddeletechain(NODE*h){NODE*p;while(h){p=h;h=h->next;deletep;}}voidmain(){intn;cout<<"请输入班级人数！"<<endl<<"班级人数为：";cin>>n;cout<<endl;cout<<"请输入班级学生信息！"<<endl;cout<<"学号姓名C++成绩mathsenglish"<<endl;NODE*h;h=Create(n);cout<<endl<<"学号姓名C++mathsenglish"<<endl;print(h);deletechain(h);}将链表依照产品种类分类#include<iostream.h>#include<string.h>structnode{charproduct[20];charcategory[10];node*next;};node*create(void){nodetemp,*p2=&temp;charproduct[20],category[10];while①{cout<<"输入产品名称和种类，当输入产品名称为end时表示结束:";cin>>product>>category;if(strcmp(product,"end")==0)break;p2->next=newnode;p2=p2->next;strcpy(p2->product,product);strcpy(p2->category,category);}p2->next=NULL;returntemp.next;}voidprint(node*h){while(h){cout<<h->product<<'\t'<<h->category<<endl;h=h->next;}cout<<endl;}voiddeletechain(node*h){node*p;while(p=h){h=h->next;deletep;}}node*insertascategory(node*h,node*p){node*p2=0,*p1=h;if(h==0){p->next=0;returnp;}while(p1&&strcmp(p1->category,p->category)){p2=p1;p1=p1->next;}while(p1&&strcmp(p1->category,p->category)==0){p2=p1;p1=p1->next;}p->next=p1;p2->next=p;returnh;}node*classify(node*h){node*h2=0,*p;while(h){p=h;h=h->next;h2=insertascategory(h2,p);}returnh2;}voidmain(void){node*h;h=create();print(h);h=classify(h);print(h);deletechain(h);}以x值为界把链表分为两部分structnode{intdata;node*next;};node*change(node*pa,intx){node*p1,*p2,*p,*q;p1=p2=pa;p=newnode;p->data=x;while(p2->data<x&&p2->next!=0){p1=p2;p2=p2->next;}if(p2->next!=0){p->next=p2;p1->next=p;q=p1;while(p2!=0){if(p2->data<x){p1->next=p2->next;p2->next=p;q->next=p2;q=p2;p2=p1->next;}else{p1=p2;p2=p2->next;}}}else{p1=p2;p->next=0;}returnpa;}voidmain(){nodea[10]={{3},{4},{2},{1},{9},{6},{5},{0},{10},{6}},*head=a,*p;inti,x;for(i=0;i<9;i++)a[i].next=&a[i+1];a[9].next=NULL;cout<<"输入x的值:";cin>>x;head=change(head,x);p=head;while(p){cout<<p->data<<'\t';p=p->next;}cout<<endl;}通讯录#include<iostream.h>#include<string.h>#include<stdlib.h>#defineN3structSTUDENT{charid[15];charname[20];charphone[15];charroom[5];};STUDENTstu[N];intflage;voidInput(STUDENT*);voidOutput(STUDENT*);voidOutput1(STUDENT*);voidSearch_face(STUDENT*);voidSearch1(STUDENT*);voidSearch2(STUDENT*);voidSearch3(STUDENT*);voidSearch4(STUDENT*);voidSort_face(STUDENT*);voidSort1(STUDENT*);voidSort2(STUDENT*);voidSort3(STUDENT*);voidSort4(STUDENT*);voidface(){inti;cout<<endl<<'\t';for(i=0;i<57;i++)cout<<'*';cout<<endl;cout<<"\t*"<<"\t\t\t\t\t\t\t*\n";cout<<"\t*"<<"\t\t\t学生通讯录\t\t\t*\n";cout<<"\t*"<<"\t\t\t\t\t\t\t*\n";cout<<"\t*"<<"\t1、输入\t2、盘问\t3、排序\t4、输出\t5、退出\t\t*\n";cout<<"\t*"<<"\t\t\t\t\t\t\t*\n"<<'\t';for(i=0;i<57;i++)cout<<'*';cout<<endl<<endl;do{cout<<"请输入各功能的序号，执行！cin>>i;}while(i<1||i>5);cout<<endl;switch(i){case1:Input(stu);break;case2:Search_face(stu);break;case3:Sort_face(stu);break;case4:Output(stu);break;case5:exit(0);

";}}voidInput(STUDENT*ps){flage=1;cout<<"请输入学生信息！\n\n";cout<<"学号姓名for(inti=0;i<N;i++){

电话

宿舍号

\n";cin>>ps[i].id>>ps[i].name>>ps[i].phone>>ps[i].room;}face();}voidSearch_face(STUDENT*ps){if(flage==0){cout<<"你还没输入数据！请输入！";face();}cout<<endl<<'\t';for(inti=0;i<57;i++)cout<<'*';cout<<endl;cout<<"\t*"<<"\t\t\t\t\t\t\t*\n";cout<<"\t*"<<"\t\t\t

盘问\t\t\t\t*\n";cout<<"\t*"<<"\t\t\t\t\t\t\t*\n";cout<<"\t*"<<"\t1

、姓名

\t2、学号

\t3、电话

\t4、宿舍\t5、退出\t\t*\n";cout<<"\t*"<<"\t\t\t\t\t\t\t*\n"<<'\t';for(i=0;i<57;i++)cout<<'*';cout<<endl<<endl;do{cout<<"请输入盘问方式的序号，执行！cin>>i;}while(i<1||i>5);cout<<endl;switch(i){case1:Search1(stu);break;case2:Search2(stu);break;case3:Search3(stu);break;case4:Search4(stu);break;case5:face();

";}}voidSort_face(STUDENT*ps){if(flage==0){cout<<"你还没输入数据！请输入！face();}cout<<endl<<'\t';for(inti=0;i<57;i++)cout<<'*';cout<<endl;cout<<"\t*"<<"\t\t\t\t\t\t\t*\n";

";cout<<"\t*"<<"\t\t\t

排序\t\t\t\t*\n";cout<<"\t*"<<"\t\t\t\t\t\t\t*\n";cout<<"\t*"<<"\t1

、姓名

\t2、学号

\t3、电话

\t4、宿舍\t5、退出\t\t*\n";cout<<"\t*"<<"\t\t\t\t\t\t\t*\n"<<'\t';for(i=0;i<57;i++)cout<<'*';cout<<endl<<endl;do{cout<<"请输入排序方式的序号，执行！cin>>i;}while(i<1||i>5);cout<<endl;switch(i){case1:Sort1(stu);break;case2:Sort2(stu);break;case3:Sort3(stu);break;case4:Sort4(stu);break;case5:face();

";}}voidPrint(STUDENTst){cout<<"学号姓名电话宿舍号\n";cout<<""<<st.id<<'\t'<<<<'\t'<<st.phone<<'\t'<<st.room<<'\n';}voidSearch1(STUDENT*ps){intk=0;charstr[20];cout<<"请输入盘问信息（姓名）：";cin>>str;for(inti=0;i<N;i++)if(strcmp(ps[i].name,str)==0){k=1;break;}if(k){cout<<"盘问结果是：\n";Print(ps[i]);}elsecout<<"该学生不存在！";Search_face(stu);}voidSearch2(STUDENT*ps){intk=0;charstr[20];cout<<"请输入盘问信息（学号）：";cin>>str;for(inti=0;i<N;i++)if(strcmp(ps[i].id,str)==0){k=1;break;}if(k){cout<<"盘问结果是：\n";Print(ps[i]);}elsecout<<"该学生不存在！";Search_face(stu);}voidSearch3(STUDENT*ps){intk=0;charstr[20];cout<<"请输入盘问信息（电话）：";cin>>str;for(inti=0;i<N;i++)if(strcmp(ps[i].phone,str)==0){k=1;break;}if(k){cout<<"盘问结果是：\n";Print(ps[i]);}elsecout<<"该学生不存在！";Search_face(stu);}voidSearch4(STUDENT*ps){intk=0;charstr[20];cout<<"请输入盘问信息（宿舍）：";cin>>str;for(inti=0;i<N;i++)if(strcmp(ps[i].room,str)==0){k=1;break;}if(k){cout<<"盘问结果是：\n";Print(ps[i]);}elsecout<<"该学生不存在！";Search_face(stu);}voidSort1(STUDENT*ps){STUDENTs;for(inti=0;i<N-1;i++)for(intj=i;j<N;j++)if(strcmp(ps[i].name,ps[j].name)>0){s=ps[i];ps[i]=ps[j];ps[j]=s;}cout<<"排序结果是：\n";Output1(ps);Sort_face(stu);}voidSort2(STUDENT*ps){STUDENTs;for(inti=0;i<N-1;i++)for(intj=i;j<N;j++)if(strcmp(ps[i].id,ps[j].id)>0){s=ps[i];ps[i]=ps[j];ps[j]=s;}cout<<"排序结果是：\n";Output1(ps);Sort_face(stu);}voidSort3(STUDENT*ps){STUDENTs;for(inti=0;i<N-1;i++)for(intj=i;j<N;j++)if(strcmp(ps[i].phone,ps[j].phone)>0){s=ps[i];ps[i]=ps[j];ps[j]=s;}cout<<"排序结果是：\n";Output1(ps);Sort_face(stu);}voidSort4(STUDENT*ps){STUDENTs;for(inti=0;i<N-1;i++)for(intj=i;j<N;j++)if(strcmp(ps[i].room,ps[j].room)>0){s=ps[i];ps[i]=ps[j];ps[j]=s;}cout<<"排序结果是：Output1(ps);Sort_face(stu);

\n";}voidOutput(STUDENT*ps){if(flage==0){cout<<"你还没输入数据！请输入！face();}cout<<"学号姓名电话for(inti=0;i<N;i++)

";

宿舍号

\n";cout<<""<<ps[i].id<<'\t'<<ps[i].name<<'\t'<<ps[i].phone<<'\t'<<ps[i].room<<'\n';face();}voidOutput1(STUDENT*ps){cout<<"学号姓名电话宿舍号\n";for(inti=0;i<N;i++)cout<<""<<ps[i].id<<'\t'<<ps[i].name<<'\t'<<ps[i].phone<<'\t'<<ps[i].room<<'\n';}voidmain(){

while①face();}第7章类和对象一、选择题题号12345678910答案CDBBDDDDDB题号11121314151617181920答案CDACACDADD勘误：其中“合法的”改为“不合法的”二、填空题1．①类名和作用域运算符

②对象名和成员运算符

或指针变量名和指针成员运算符2．①私有的②公有的3．this4．①

public

②

returna;

③

cout<<a<<

’t’<<b<<endl;

④*this⑤A::A(intx,inty)⑥t2=t1.add()⑦t1.print()⑧cout<<t2.geta()<<endl5.①str=newchar[strlen(s)+1]②strcpy(str,s)③delete[]str④Stringst(“abcde”)⑤st.print()6.D(2001,10,1),D(2002,10,1),D(2003,110,1)7.①A*p=a1;②*(p+i)=A(i)③p++->print()8.①newchar[strlen(s1)+1]②delete[]p9．①staticintcountP②countP++③countP--④staticvoid⑤intPoint::⑥2⑦7⑧210.①000②123③5103④24611.246412.①构造函数A②构造函数B③2031④析构函数~A三、编程题1．求n!的类#include<iostream.h>classA{intn,nn;public:A(intx=0){n=x;}voidset(intx){n=x;}voidfun(){nn=1;for(inti=1;i<=n;i++)nn*=i;}voidprint(){cout<<"n="<<n<<endl;cout<<"nn="<<nn<<endl;}};voidmain(){a1;a1.fun();a1.print();a1.set(5);a1.fun();a1.print();}2．字符串类#include<iostream.h>#include<string.h>classSTR{char*p;public:STR(char*s=0){if(s){p=newchar[strlen(s)+1];strcpy(p,s);}}voidset(char*s=0){if(p)delete[]p;if(s){p=newchar[strlen(s)+1];strcpy(p,s);}elsep=0;}voidjoin(char*s){intn1=strlen(p),n2=strlen(s);char*p0=newchar[n1+n2+1],*p1=p0,*p2=p;while(*p1++=*p2++);p1--;p2=s;while(*p1++=*p2++);delete[]p;p=newchar[n1+n2+1];p1=p;p2=p0;while(*p1++=*p2++);delete[]p0;}voidbackward(){char*p1=p,*p2=p;while(*p2++);p2-=2;while(p1<p2){chart=*p1;*p1=*p2;*p2=t;p1++;p2--;}}~STR(){if(p)delete[]p;}voidprint(){if(p)cout<<p<<endl;

}};voidmain(){STRst1("12345");st1.print();st1.set("abcde");st1.print();st1.join("12345");st1.print();st1.backward();st1.print();}3．学生类#include<iostream.h>#include<string.h>classSTU{charname[15];floateng,math,phy,pro,total,ave;public:voidinput(){cout<<"请输入学生姓名、英语成绩、数学成绩、物理成绩、程序成绩：cin>>name>>eng>>math>>phy>>pro;total=eng+math+phy+pro;ave=total/4;

";}floatget_total(){

returntotal;

}floatget_ave(){

returnave;

}voidprint(){cout<<name<<endl;cout<<"英语："<<eng<<',';cout<<"数学："<<math<<',';cout<<"物理："<<phy<<',';cout<<"程序设计："<<pro<<',';cout<<"总分："<<total<<',';cout<<"平均分："<<ave<<'\n';}};voidinput(STUt[],intn){for(inti=0;i<n;i++)t[i].input();}voidsort(STUt[],intn){for(inti=0;i<n-1;i++)for(intj=i+1;j<n;j++)if(t[i].get_ave()<t[j].get_ave()){STUt0(t[i]);t[i]=t[j];t[j]=t0;}}voidprint(STUt[],intn){for(inti=0;i<n;i++)t[i].print();}voidmain(){STUst[5];input(st,5);print(st,5);sort(st,5);print(st,5);}4．二维数组类Array#include<iostream.h>classArray{floata[4][5],b[5][4];public:Array(floatt[4][5]){for(inti=0;i<4;i++)for(intj=0;j<5;j++){a[i][j]=t[i][j];b[j][i]=0;}}voidfun(){for(inti=0;i<5;i++)for(intj=0;j<4;j++){intn,i0,j0;n=i*4+j;i0=n/5;j0=n-i0*5;b[i][j]=(a[(i0+3)%4][j0]+a[(i0+1)%4][j0]+a[i0][(j0+4)%5]+a[i0][(j0+1)%5])/4;}}voidprint(){cout<<"数组a:\n";for(inti=0;i<4*5;i++){cout<<*(*a+i)<<'\t';if((i+1)%5==0)cout<<'\n';}cout<<"数组b:\n";for(i=0;i<5*4;i++){cout<<*(*b+i)<<'\t';if((i+1)%4==0)cout<<'\n';}}};voidmain(){floatt[4][5]={{1,2,3,4,5},{6,7,8,9,10},{11,12,13,14,15},{16,17,18,19,20}};Arraytest(t);test.fun();test.print();}5．时间类Time#include<iostream.h>#include<string.h>classtime{inth,m,s;char*str_t;public:time(inthh=0,intmm=0,intss=0){h=(hh>=0&&hh<24?hh:0);m=(mm>=0&&mm<60?mm:0);s=(ss>=0&&ss<60?ss:0);str_t=newchar[9];*str_t='\0';}~time(){delete[]str_t;}voidset_t(int,int,int);voidconvert();voidprint()const{cout<<str_t<<endl;}};char*itoa(intn){char*tmp=newchar[3];if(n<10){*tmp='0';*(tmp+1)=n+'0';}else{*tmp=n/10+'0';*(tmp+1)=n%10+'0';}*(tmp+2)='\0';returntmp;}voidtime::set_t(inthh,intmm,intss){h=(hh>=0&&hh<24?hh:0);m=(mm>=0&&mm<60?mm:0);s=(ss>=0&&ss<60?ss:0);*str_t='\0';convert();}voidtime::convert(){char*tmp;tmp=itoa(h);strcat(str_t,tmp);strcat(str_t,":");tmp=itoa(m);strcat(str_t,tmp);strcat(str_t,":");tmp=itoa(s);strcat(str_t,tmp);delete[]tmp;}voidmain(){timet1;t1.convert();t1.print();t1.set_t(11,5,30);t1.print();}第8章继承与多态性一、选择题题号12345678910答案CDADABCBDD题号11121314151617181920答案DDACBCCCAC二、填空题1．（1）①a、b、c、x、y、z②b、y③c、z④a、x⑤b、c、x、y、z⑥b、y（2）①y②b、c、z③a、x④b、c、x、y、z⑤y（3）①y②z③a、b、c、x④b、c、x、y、z⑤y2．私有3．抽象4．虚基5．①基类②对象6．①静态②编译③虚函数7．①21②058．①10020030030②10100③202009．①510②end.③201010．①classAclassB②end.③~classB~classA11．①10②buildB③buildC④releaseA12．①classB②classC③classD④513．①55②202014．①10②102015．①1②3③5④1001016．①B::f()②B::fun()③A::f()④B::fun()17．①姓名陈涛年薪万元。②姓名李原③姓名李原月薪水4000元18．①110②222019．①protected或public②Base1(s1),Base2(s2)或Base2(s2),Base1(s1)③Base1::str④test.print()20．①virtualvoidshow()=0②C(int,int,int)（注：参数可有任一名称）③b1(y)④&t三、编程题1．求长方形的面积和长方体的表面积、体积#include<iostream.h>classRectangle{protected:floatL;floatW;floatarea;public:

//长方形的长//长方形的宽//长方形的面积Rectangle(floatL1,floatW1){L=L1;W=W1;}voidfunction(){area=L*W;}voidshow(){cout<<"长为"<<L<<"

，宽为

"<<W<<"

的长方形面积为

"<<area<<endl;}};classCuboid:publicRectangle{floatH;//长方体的高floatvolume;//长方体的体积public:Cuboid(floata,floatb,floatc):Rectangle(a,b){H=c;}voidfunction(){area=(L*W+L*H+W*H)*2;}voidfun(){volume=L*W*H;}voidshow(){cout<<"长为"<<L<<"

，宽为"<<W<<"

，高为"<<H<<"

的长方体表面积为

"<<area<<"，体积为"<<volume<<endl;}};voidmain(){Rectangler(2,3);Cuboidc(2,3,4);

r.function();c.function();

r.show();c.fun();

c.show();}2．产生并输出圆桌信息#include<iostream.h>#include<string.h>classCircle{protected:doubleradius;doublearea;public:Circle(doubler){radius=r;}};classTable{protected:doubleheight;public:Table(doubleh){height=h;}};classRoundtable:publicTable,publicCircle{char*color;public:Roundtable(doubleh,doubler,charc[]):Circle(r),Table(h){color=newchar[strlen(c)+1];strcpy(color,c);}voidfun(){area=3.14*radius*radius;}voidshow(){cout<<"高度："<<height<<"米"<<endl;cout<<"面积："<<area<<"平方米"<<endl;cout<<"颜色："<<color<<endl;}~Roundtable(){delete[]color;}};voidmain(){Roundtablert(0.75,1.1,"黑色");rt.fun();rt.show();}3．计算企业的经营税#include<iostream.h>#include<string.h>classTax{protected:charname[50];doubleincome;

//企业名称//经营收入doubletaxes;

//税金public:Tax(char*n,doublein){strcpy(name,n);income=in;}virtualvoidfun()=0;voidshow(){cout<<name<<"的经营收入为"<<income<<"万元，税金为"<<taxes<<"万元\n";}};classService:publicTax{public:Service(char*n,doublein):Tax(n,in){}voidfun(){taxes=income*5/100;}};classFabrication:publicTax{public:Fabrication(char*n,doublein):Tax(n,in){}voidfun(){taxes=income*17/100;}};voidprint(Tax&t){t.fun();t.show();}voidmain(){charname[50];intincome;cout<<"请输入服务性企业名称：";cout<<"请输入经营收入(万元)：";

cin>>name;cin>>income;Services(name,income);print(s);cout<<"请输入生产性企业名称：";cout<<"请输入经营收入(万元)：";

cin>>name;cin>>income;Fabricationf(name,income);print(f);}4．把原始体育成绩变换为等第#include<iostream.h>classSports{protected:intitem;charname[20];

//项目//姓名doublescore;chargrade[10];public:Sports(inti,char*n){

//原始成绩//评定等第item=i;strcpy(name,n);cout<<"请输入原始成绩：";cin>>score;}voidshow(){cout<<name<<"的"<<item<<"米成绩为"<<score<<"秒,等第为"<<grade<<endl;}virtualvoidchange()=0;};classRun50:publicSports{public:Run50(inti,char*n):Sports(i,n){}voidchange(){if(score<=6.50)strcpy(grade,"优秀");elseif(score<=6.70)strcpy(grade,"优秀");elseif(score<=7.10)strcpy(grade,"及格");elsestrcpy(grade,"不及格");}};classRun100:publicSports{public:Run100(inti,char*n):Sports(i,n){}voidchange(){if(score<=13.10)strcpy(grade,"优秀");elseif(score<=13.70)strcpy(grade,"优秀");elseif(score<=14.90)strcpy(grade,"及格");elsestrcpy(grade,"不及格");}};classRun1000:publicSports{public:Run1000(inti,char*n):Sports(i,n){}voidchange(){if(score<=203.00)strcpy(grade,"优秀");elseif(score<=213.00)strcpy(grade,"优秀");elseif(score<=233.00)strcpy(grade,"及格");elsestrcpy(grade,"不及格");}};classRun1500:publicSports{public:Run1500(inti,char*n):Sports(i,n){}voidchange(){if(score<=323.00)strcpy(grade,"优秀");elseif(score<=337.00)strcpy(grade,"优秀");elseif(score<=365.00)strcpy(grade,"及格");elsestrcpy(grade,"不及格");}};voidmain(){Sports*s;intit;cout<<"请输入项目(50/100/1000/1500)：";cin>>it;charna[20];cout<<"请输入姓名：";cin>>na;if(it==50){Run50r50(it,na);s=&r50;s->change();s->show();}elseif(it==100){Run100r100(it,na);s=&r100;s->change();s->show();}elseif(it==1000){Run1000r1000(it,na);s=&r1000;s->change();s->show();elseif(it==1500){Run1500r1500(it,na);s=&r1500;s->change();s->show();else{cout<<"输入项目错误\n";exit(0);}

}

}}第9章友元函数与运算符重载一、选择题题号12345678910答案CCDDAACCAD题号11121314151617181920答案CDDAADADCC二、填空题A封装性或隐蔽性友元函数①当前对象②该函数的参数友元x.operator+(operator*(y,z))静态赋值运算符重载函数A&operator=(A&);1020102012点(1,2)点(2,3)点(3,4)点(2,3)102020216,84,515.①Tpoint::a②b③(a.a-b.a)*(a.a-b.a)+(a.b-b.b)*(a.b-b.b)16.①Fraction(){}②f.num=-num③returnf17.①Array(){}②ArrayArray::operator^(Arrayarr)③j<arr.ar[i]④*this18.①t.geta()②*this19.①strlen(s)+1②ptr-=2③delete[]str20.①intindex②data[index]③a[i]三、编程题圆锥体类#include<iostream.h>#include<math.h>constfloatPI=3.1415926;classV{floatr,h;public:V(floata,floatb){r=a;h=b;}floatv1(){returnPI*pow(r,2)*h/3;}friendfloatvolum(V&);};floatvolum(V&a){returnPI*a.r*a.r*a.h/3;}voidmain(){Va1(25,40);cout<<"圆锥体的体积为：\n";cout<<volum(a1)<<endl;cout<<a1.v1()<<endl;}矩阵类Array#include<iostream.h>