西安交大C++随堂练习11

西安交通大学实验报告实验目的（1）掌握类的定义和基本使用。（2）用类与之前的知识结合解决实际问题。实验内容第7章第1题1.程序源代码#include<iostream>usingnamespacestd;classDog{private: charname[20]; intage; charsex[5]; floatweight;public: voidSet(charn[20],inta,chars[5],floatw) { strcpy(name,n); age=a; strcpy(sex,s); weight=w; Show(); } voidShow() { cout<<"定义的狗的名字是"<<name<<endl; cout<<"定义的狗的年龄是"<<age<<endl; cout<<"定义的狗的性别是"<<sex<<endl; cout<<"定义的狗的体重是"<<weight<<endl; }};intmain(){ Dogdog1; chara[20],c[5]; intb; floatd; cout<<"初始化的狗的信息是"<<endl; dog1.Set("white",8,"F",15); cout<<"请依次输入狗的名字、年龄、性别、体重"<<endl; cin>>a>>b>>c>>d; dog1.Set(a,b,c,d); return0;}2.实验结果（二）实验题目二：第7章第2题1.程序源代码#include<iostream>#include<cmath>usingnamespacestd;classCircle{private: floatleftup[4]; floatrightdown[4];public: Circle() { leftup[0]=-1; leftup[1]=1; rightdown[0]=1; rightdown[1]=-1; area(); length(); } Circle(floata[],floatb[]) { leftup[0]=a[0]; leftup[1]=a[1]; rightdown[0]=b[0]; rightdown[1]=b[1]; area(); length(); } voidarea() { cout<<"设定的圆的面积是"<<3.1415926*(rightdown[0]-leftup[0])*(leftup[1]-rightdown[1])/4<<endl; } voidlength() { cout<<"设定的圆的周长是"<<2*3.14*abs(rightdown[0]-leftup[0])<<endl; }};intmain(){ floatc[2],d[2]; cout<<"初始化的圆为"<<endl; Circle(); cout<<"请依次输入圆的外切正方形的左上角和右下角坐标"<<endl; cin>>c[0]>>c[1]>>d[0]>>d[1]; Circle(c,d); return0;}2.实验结果（三）实验题目三：第7章第3题1.程序源代码#include<iostream>#include<cmath>usingnamespacestd;classTrangle{private: floatA; floatB; floatC; floatS;public: voidCheck(floata,floatb,floatc) { A=a; B=b; C=c; if(A+B>C&&A+C>B&&B+C>A) cout<<"这三个数能构成三角形的三边"<<endl; else cout<<"这三个数不构成三角形的三边"<<endl; } voidArea() { floatx; if(A+B>C&&A+C>B&&B+C>A&&A>0&&B>0&&C>0) { x=(A+B+C)/2; S=sqrt(x*(x-A)*(x-B)*(x-C)); cout<<"三角形的面积是"<<S<<endl; } } voidProve() { floattemp; if(A+B>C&&A+C>B&&B+C>A&&A>0&&B>0&&C>0) { if(A<B) { temp=A; A=B; B=temp; } if(A<C) { temp=A; A=C; C=temp; } if(A*A==B*B+C*C) cout<<"该三角形是直角三角形"<<endl; if(A*A>B*B+C*C) cout<<"该三角形是钝角三角形"<<endl; if(A*A<B*B+C*C) cout<<"该三角形是锐角三角形"<<endl; } }};intmain(){ TrangleT1; floata,b,c; cout<<"请输入三角形的三条边长(都是正数)"<<endl; cin>>a>>b>>c; T1.Check(a,b,c); T1.Area(); T1.Prove(); return0;}2.实验结果（四）实验题目四：第7章第4题1.程序源代码#include<iostream>usingnamespacestd;classAddress{ charname[20]; charaddress[100]; charcity[10]; intpostcode;public: voidChangename(char*name); voidDisplay(char*name,char*address,char*city,intpostcode);};voidAddress::Changename(char*name){ charn[20]; cin>>n; strcpy(name,n);}voidAddress::Display(char*name,char*address,char*city,intpostcode){ cout<<"姓名"<<name<<endl; cout<<"居住的街道地址"<<address<<endl; cout<<"城市"<<city<<endl; cout<<"邮编"<<postcode<<endl;}intmain(){ charname[20],add[100],city[10]; intn; Addressd1; cout<<"请依次输入姓名、所居住的街道地址、城市和邮编"<<endl; cin>>name>>add>>city>>n; d1.Display(name,add,city,n); cout<<"请输入要改的名字"<<endl; d1.Changename(name); d1.Display(name,add,city,n); return0;}2.实验结果（五）实验题目五：定义一个二元一次方程组类，成员函数应有输入6个系数的函数、求二元一次方程组的根的函数，输出该方程组的函数，即输出格式如下：AX+BY=CDX+EY=F并编写主函数加以测试。1.程序源代码#include<iostream>usingnamespacestd;classequationgroup{private: floatA; floatB; floatC; floatD; floatE; floatF;public: voidset(floata,floatb,floatc,floatd,floate,floatf) { A=a; B=b; C=c; D=d; E=e; F=f; } voidresult() { if(A/D==B/E&&B/E==C/F) cout<<"该二元一次方程组有无穷解"<<endl; else { if(A/D==B/E&&B/E!=C/F) cout<<"该二元一次方程组无解"<<endl; else { cout<<"该二元一次方程组的解是"<<endl; cout<<"x="<<(C*E-B*F)/(A*E-B*D)<<endl; cout<<"y="<<(C*D-A*F)/(B*D-A*E)<<endl; } } }};intmain(){ equationgroupEQ1; floata,b,c,d,e,f; cout<<"请依次输入二元一次方程组的系数："<<endl; cin>>a>>b>>c>>d>>e>>f; EQ1.set(a,b,c,d,e,f); EQ1.result(); return0;}2.实验结果（六）实验题目六：定义一个翻译机器人类，属性成员：姓名、年龄、性能(整数值)。函数成员：设置函数set(charname,intage,intf)、得到性能值函数get_f()、翻译周名函数tran_weekday(intweekday)、翻译月名函数tran_month(intmonth)、翻译整数函数trans_int(intk)。性能属性说明如下：0代表不会任何翻译；1代表能翻译周名；2代表还能翻译月名；3代表又能翻译整数。整数翻译函数实际上就是第5与第6章指针与函数实验中的第8题。最后编写主函数加以测试。1.程序源代码#include<iostream>usingnamespacestd;classRobot{private: charmingzi[20]; intyear; intx;public: voidset(charname[20],intage,intf) { strcpy(mingzi,name); year=age; x=f; } voidget_f() { inta,b,c; if(x==0) cout<<"您的机器人不会翻译"<<endl; if(x==1) { cout<<"您的机器人会翻译周名"<<endl; cout<<"请输入周内第任意一天"<<endl; cin>>a; tran_weekday(a); } if(x==2) { cout<<"您的机器人会翻译周名和月名"<<endl; cout<<"请输入周内第任意一天"<<endl; cin>>a; tran_weekday(a);cout<<"请输入第任意一月"<<endl; cin>>b; tran_month(b); } if(x==3) { cout<<"您的机器人会翻译周数月数和整数"<<endl; cout<<"请输入周内第任意一天"<<endl; cin>>a; tran_weekday(a);cout<<"请输入第任意一月"<<endl; cin>>b; tran_month(b); cout<<"请输入任意一个整数"<<endl; cin>>c; tran_int(c); } } voidtran_weekday(intweekday) { char*xingqi[]={"","Monday","Tuesday","Wendesday","Thursday","Friday","Saturday","Sunday"}; for(inti=0;i<8;i++) { if(weekday==i) cout<<"英文为："<<xingqi[i]<<endl; } } voidtran_month(intmonth) { char*yuefen[]={"","January","February","March","April","May","June","July","August","September","October","November","December"}; for(inti=0;i<13;i++) { if(month==i) cout<<"英文为："<<yuefen[i]<<endl; } } voidtran_int(intk) { inta,b; char*shu[]= {"","ONE","TWO","THREE","FOUR","FIVE","SIX","SEVEN","EIGHT","NINE","TEN","ELEVEN","TEWLVE","THIRTEEN","FOURTEEN","FIFTEEN","SIXTEEN","SEVENTEEN","EIGHTEEN","NINETEEN"}; char*shu2[]={"","","TWENTY","THIRTY","FORTY","FIFTY","SIXTY","SEVENTY","EIGHTY","NINETY"}; a=k/1000; b=k%1000; if(a==0) { if(k<0) cout<<"MINUS"<<""; if(b/100!=0) cout<<shu[b/100]<<""<<"HUNDREN"<<""; if(b%100<10) cout<<shu[b%100]; if(b%100>=10&&b%100<20) cout<<shu[b%100]; if(b%100>19&&b%100<100) cout<<shu2[b%100/10]<<""<<shu[b%10]; cout<<endl; } else { if(k<0) cout<<"MINUS"<<""; if(a/100!=0) cout<<shu[a/100]<<""<<"HUNDREN"<<""; if(a%100<10) cout<<shu[a%100]; if(a%100>=10&&a%100<20) cout<<shu[a%100]; if(a%100>19&&a%100<100) cout<<shu2[a%100/10]<<""<<shu[a%10]; cout<<""<<"THOUSAND"; if(b/100!=