数学建模社区-数学中国
标题:
C++程序设计 课后作业
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作者:
慢跑20
时间:
2014-5-5 22:39
标题:
C++程序设计 课后作业
我们专业开了这门课,教材是 谭浩强的 C++程序设计。
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除了课后习题,还布置了一些习题,这里给大家分享一下。
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作者:
慢跑20
时间:
2014-5-5 22:40
占楼编辑 目录
作者:
慢跑20
时间:
2014-5-5 22:40
占楼编辑 目录
作者:
慢跑20
时间:
2014-5-5 22:41
#include<iostream>
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#include<string>
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using namespace std;
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class base
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{
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public:
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base(string nam,int ag)
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{name=nam;age=ag;}
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protected:
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string name;
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int age;
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};
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class leader:virtual public base
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{public:
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leader(string nam,int ag,string jo,string par):
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base(nam,ag),job(jo),part(par){}
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protected:
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string job;
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string part;
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};
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class engineer:virtual public base
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{
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public:
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engineer(string nam,int ag,string titl,string majo):
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base(nam,ag),title(titl),major(majo){}
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protected:
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string title;
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string major;
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};
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class chairman:public leader,public engineer
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{
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public:
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chairman(string nam,int ag,string jo,string par,string titl,string majo,int w)
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:base(nam,ag),leader(nam,ag,jo,par),engineer(nam,ag,titl,majo),wage(w){}
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void display()
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{ cout<<"name:"<<name <<" age:"<<age <<" job:"<<job <<" part:"<<part <<endl<<"title:"<<title <<" major:"<<major <<" wages:"<<wage<<endl;
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}
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private:
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int wage;
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};
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int main()
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{
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cout<<"信息1101班 王明辉" <<endl;
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chairman c("Wang Minghui",'21',"Zhiwu1","Net part","Profession","Math and Computer",9000);
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c.display();
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return 0;
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}
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这个题的题目忘了{:3_50:} 明天补发一下。
作者:
慢跑20
时间:
2014-5-11 22:41
2014-5-11 22:41 上传
下载附件
(119.64 KB)
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#include<iostream>
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using namespace std;
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class teacher
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{public:
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teacher(int hou){
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hour=hou;}
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void print(){
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cout<<"工作"<<hour<<"小时的工资是:"<<salary<<endl;
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}
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virtual void money()=0;
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protected:
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int hour;
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int salary;
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};
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class profession:public teacher
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{public:
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profession(int hou):
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teacher(hou){}
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void money(){
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salary=hour*50+5000;
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}
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};
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class fuprofession:public teacher
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{public:
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fuprofession(int hou):
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teacher(hou){}
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void money(){
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salary=hour*30+3000;
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}
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};
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class jiang:public teacher
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{public:
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jiang(int hou):
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teacher(hou){}
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void money(){
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salary=hour*20+2000;
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}
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};
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int main()
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{
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profession pro(20);
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teacher *t1;
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t1=&pro;
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t1->money();
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cout<<" 教授:";
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pro.print();
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fuprofession fu(30);
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teacher *t2;
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t2=&fu;
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t2->money();
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cout<<"副教授:";
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fu.print();
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jiang jiang(40);
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teacher *t3;
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t3=&jiang;
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t3->money();
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cout<<" 讲师:";
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jiang.print();
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return 0;
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}
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作者:
慢跑20
时间:
2014-5-19 22:29
2014-5-19 22:29 上传
下载附件
(100.29 KB)
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#include<iostream.h>
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#include<string.h>
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class circle
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{
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double radius;
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public:
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circle(double r) { radius=r; }
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double getarea() { return radius*radius*3.1415; }
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};
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class table
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{
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double height;
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public:
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table(double h) { height=h; }
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double getheight() { return height; }
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};
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class roundtable : public table,public circle
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{
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char *color;
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public:
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roundtable(double h, double r, char c[]) : circle (r) , table (h)
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{
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color=new char[strlen(c)+1];
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strcpy (color, c);
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}
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char *getcolor() { return color; }
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};
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void main()
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{
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roundtable rt(0.9,1.5,"紫色");
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cout << "圆桌属性数据:" << endl;
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cout << "高度:" <<rt.getheight() << "米" << endl;
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cout << "面积:" <<rt.getarea() << "平方米" << endl ;
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cout << "颜色:" <<rt.getcolor() << endl;
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}
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作者:
慢跑20
时间:
2014-5-22 12:31
建立一个分数类franction。分数类的数据成员包括分子和分母。运算符重载求约分、通分、减、乘、除、求倒。
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#include<iostream.h>
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#include<math.h>
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class fraction{
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public:
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int zi; //分子
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int mu; //分母
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void yuefen(); //约分
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void tongfen(fraction&); //通分
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fraction(int a=0,int b=1){
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zi=a;
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mu=b;
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try{ if(mu==0) throw mu; }
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catch (int)
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{cout<<"分母不可为零!"<<endl;}
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}
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fraction dao(); //求倒数
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void display();
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void input(); //输入分数
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friend fraction operator+(fraction &f1,fraction &f2);
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friend fraction operator-(fraction &f1,fraction &f2);
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friend fraction operator*(fraction &f1,fraction &f2);
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friend fraction operator/(fraction &f1,fraction &f2);
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};
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void fraction::yuefen(){ //约分
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int a,b,t;
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if(mu<0){
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mu=-mu;
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zi=-zi;
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}
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a=abs(zi);
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b=abs(mu);
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while(a%b){
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t=a; a=b; b=t%b;
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}
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zi/=b;
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mu/=b;
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}
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void fraction::tongfen(fraction& b){ //通分
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int temp;
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yuefen();
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b.yuefen();
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zi*=b.mu;
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b.zi*=mu;
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temp=mu*b.mu;
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mu=b.mu=temp;
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}
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fraction operator + (fraction &f1,fraction &f2)
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{
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fraction f3(0,1);
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f3.mu=f1.mu*f2.mu;
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f3.zi=f1.zi*f2.mu+f1.mu*f2.zi;
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f3.yuefen();
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return f3;
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};
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fraction operator - (fraction &f1,fraction &f2)
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{ fraction f3(0,1);
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f3.mu=f1.mu*f2.mu;
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f3.zi=f1.zi*f2.mu-f1.mu*f2.zi;
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f3.yuefen();
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return f3;
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}
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fraction operator * (fraction &f1,fraction &f2)
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{ fraction f3(0,1);
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f3.mu=f1.mu*f2.mu;
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f3.zi=f1.zi*f2.zi;
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f3.yuefen();
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return f3;
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}
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fraction operator / (fraction &f1,fraction &f2)
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{fraction f3(0,1);
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f3.mu=f1.mu*f2.zi;
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f3.zi=f1.zi*f2.mu;
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f3.yuefen();
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return f3;
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}
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fraction fraction::dao(){ //求倒数
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fraction temp;
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temp.zi=mu;
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temp.mu=zi;
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temp.yuefen();
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return temp;
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}
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void fraction::display(){
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yuefen();
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cout<<"="<<zi<<"/"<<mu<<endl;
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}
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void fraction::input(){
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cout<<"请输入分子、分母:"<<endl;
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cin>>zi>>mu;
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try{ if(mu==0) throw mu; }
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catch (int)
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{cout<<"分母不可为零!"<<endl;
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}
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yuefen();
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}
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void main(){
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fraction f1(1,2),f2(3,6),f3(4,-6),f4(1,1),f5(1,1),f6(1,1);
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cout<<"f1"; f1.display();
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cout<<"f2"; f2.display();
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cout<<"f3"; f3.display();
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cout<<"f4"; f4.display();
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cout<<"f5"; f5.display();
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f4=f1+f3;cout<<"两分数相加:f1+f3="; f4.display();
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f4=f1-f2;cout<<"两分数相减:f4=f1-f2="; f4.display();
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f4=f1*f3;cout<<"两分数相乘:f4=f1*f3="; f4.display();
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f4=f2/f3;cout<<"两分数相除:f4=f1/f3="; f4.display();
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f4=f2.dao();cout<<"求分数的倒数:1/f2="; f4.display();
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cout<<"以上为构造函数的数据,下面请输入2个分数:"<<endl;
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f4.input();
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f5.input();
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cout<<"f4"; f4.display();
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cout<<"f5"; f5.display();
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cout<<"f6=f4+f5";f6=f4+f5;f6.display();
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cout<<"f6=f4-f5";f6=f4-f5;f6.display();
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cout<<"f6=f4*f5";f6=f4*f5;f6.display();
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cout<<"f6=f4/f5";f6=f4/f5;f6.display();
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cout<<"f6=1/f4";f6=f4.dao();f6.display();
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}
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作者:
慢跑20
时间:
2014-5-24 21:39
定义一个Shape抽象类,建立一个point类,表示平面中的一个点;建立一个line类,表示平面中的一条线段,内含两个point类的对象;建立triangle类,表示一个三角形,内含三个line类的对象构成一个三角形,确定派生关系,编制相应程序输出相关信息,设计triangle类的成员函数完成三条边是否能构成三角形的检验和三角型面积计算,输出相关信息。
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#include<iostream>
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#include<string>
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#include<math.h>
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using namespace std;
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class Shape
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{public:
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};
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class Point:public Shape
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{public:
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Point(float a,float b)
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{x=a;y=b;}
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void setPofloat(float a,float b)
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{x=a;y=b;}
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float x,y;
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};
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class Line
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{public:
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Line(float a1,float b1,float a2,float b2):
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p1(a1,b1),p2(a2,b2){};
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double length()
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{ return (sqrt((p1.x-p2.x)*(p1.x-p2.x)+(p1.y-p2.y)*(p1.y-p2.y))); }
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void setline(){
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cin>>p1.x>>p1.y>>p2.x>>p2.y;
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}
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protected:
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Point p1,p2;
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};
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class Triangle
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{
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public:
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Triangle(float a1,float b1,float a2,float b2, float a3,float b3,float a4,float b4 ,float a5,float b5,float a6,float b6):
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l1(a1,b1,a2,b2), l2(a3,b3,a4,b4) , l3(a5,b5,a6,b6){};
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float delta(){
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d1=l1.length();
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d2=l2.length();
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d3=l3.length();
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if((d1+d2>d3)&&(d2+d3>d1)&&(d3+d1>d2))
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return 1;
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else
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return 0;
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}
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void sett(){
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cout<<"输入3条线的6个点的坐标(12个数字)"<<endl;
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l1.setline();
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l2.setline();
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l3.setline();
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cout<<"3条线的长度分别为:"<<endl;
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cout<<l1.length()<<", "<<l2.length()<<", "<<l3.length()<<"."<<endl;
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try
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{
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double p=(l1.length()+l2.length()+l3.length())/2;
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if ( (l1.length()+l2.length()<=l3.length()) || (l2.length()+l3.length()<=l1.length()) || (l3.length()+l1.length()<=l2.length()) ) throw l1.length();
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double s=sqrt( p*(p-l1.length()) * (p-l2.length()) *(p-l3.length()) );
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cout<<"三角形的面积:"<<s<<endl;
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}
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catch (double)
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{cout<<"经过异常处理,发现您所输入的坐标构成的3条线段长度不满足三角形";
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}
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}//sett()
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protected:
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Line l1,l2,l3;
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float d1,d2,d3;
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};
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int main()
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{
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Triangle t1(0,0,1,1, 1,2,3,4 , 4,5,6,7);
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try {
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float whether=t1.delta();
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if(!whether) throw whether;
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t1.sett();
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}
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catch(float)
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{cout<<"(0,0)(1,1),(1,2),(3,4),(4,5),(6,7)这几个点不可以构成三角形"<<endl;
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}
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return 0;
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}
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作者:
数学中国—罂粟
时间:
2014-7-31 22:30
楼主好厉害,谢谢分享哈
作者:
雨龙1618
时间:
2017-6-18 12:47
哈哈哈哈哈哈哈
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作者:
雨龙1618
时间:
2017-6-18 12:47
哈哈哈哈哈哈哈
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