第一题
#include<iostream> using namespace std; class Base1{ //基类base1--加法运算 public: Base1(double a,double b):m(a),n(b){cout<<"和為："<<m+n<<endl;} //声明 private: double m,n; }; class A:public Base1{ //派生类A--既要继承基类的加法，又要开拓减法 public: A(double a,double b):Base1(a,b),m(a),n(b){}; //对基类的继承 void jian(){ //成员函数--减法运算 cout<<"减为："<<m-n<<endl; } private: double m,n; }; class B:public Base1{ public: B(double a,double b):Base1(a,b),m(a),n(b){}; void mul(){ //成员函数--乘法 cout<<"乘为："<<m*n<<endl; } private: double m,n; }; class C:public Base1{ public: C(double a,double b):Base1(a,b),m(a),n(b){}; void div(){ //成员函数--除法 cout<<"除为："<<m/n<<endl; } private: double m,n; }; int main(){ double a,b; cout<<"输入m,n:"<<endl; cin>>a>>b; cout<<endl; cout<<"启动芯片A："<<endl; A a1(a,b); a1.jian(); //通过外在对象访问成员函数 cout<<"启动芯片B："<<endl; B b1(a,b); b1.mul(); cout<<"启动芯片C："<<endl; C c1(a,b); c1.div(); return 0; }第二题
#include<iostream> using namespace std; class vehicle{ public: vehicle(int m,int w):maxspeed(m),weight(w){ cout<<"最大速度："<<maxspeed<<" 重量："<<weight<<endl; } void run(){ cout<<"车启动了"<<endl; } void stop(){ cout<<"车停下了"<<endl; } private: int maxspeed,weight; }; class bicycle:virtual public vehicle{ public: bicycle(int m,int w,int h):vehicle(m,w),height(h){ cout<<" 高度："<<height<<endl; } private: int maxspeed,weight,height; }; class motorcar:virtual public vehicle{ public: motorcar(int m,int w,int s):vehicle(m,w),seatnum(s){ cout<<" 座位数："<<seatnum<<endl; } private: int maxspeed,weight,seatnum; }; class motorcycle:public bicycle,public motorcar{ public: motorcycle(int m,int w,int h,int s):vehicle(m,w),bicycle(m,w,h),motorcar(m,w,s){}//（1） private: int maxspeed,weight,height,seatnum; }; int main(){ cout<<"自行车"<<endl; bicycle b(10,50,15); b.run(); b.stop(); cout<<"汽车"<<endl; motorcar mr(30,300,6); mr.run(); mr.stop(); cout<<"摩托车"<<endl; motorcycle me(50,150,26,3); me.run(); me.stop(); return 0; } //（1）处之前写成 vehicle(m,w),height(h),seatnum(s)就不对。第三题 （1）
using namespace std; int g,h; class Fraction{ public: Fraction():top(0),bottom(1){}; Fraction(int t,int b):top(t),bottom(b){}; Fraction(int t):top(t),bottom(1){}; Fraction(Fraction &f0); void show(){ cout<<top<<"/"<<bottom<<endl;}; void operator+(Fraction &f0); void operator-(Fraction &f0); void operator*(Fraction &f0); void operator/(Fraction &f0); private: int top; int bottom; }; void Fraction::operator+(Fraction &f0){ g=top;h=bottom; top=top*f0.bottom+f0.top*bottom; bottom=bottom*f0.bottom; show(); } void Fraction::operator-(Fraction &f0){ top=g;bottom=h; top=top*f0.bottom-f0.top*bottom; bottom=bottom*f0.bottom; show(); } void Fraction::operator*(Fraction &f0){ top=g;bottom=h; top=top*f0.top; bottom=bottom*f0.bottom; show(); } void Fraction::operator/(Fraction &f0){ top=g;bottom=h; top=top*f0.bottom; bottom=bottom*f0.top; show(); } int main(){ Fraction a; Fraction b(3,4); Fraction c(5); a.show(); b.show(); c.show(); b.operator+(c); b.operator-(c); b.operator*(c); b.operator/(c); return 0; }用多文件一直没成功过。。。
转载于:https://www.cnblogs.com/lixiaoyu-Judy/p/9152435.html
