東北大學(xué)C++實驗報告6

實驗六1.實驗要求（1）定義Point類，有坐標(biāo)_x，_y兩個成員變量；對Point類重載“”(自增)、“”(自減)運算符，實現(xiàn)對坐標(biāo)值的改變。（2）定義一個車(vehiele)基類，有Run、Stop等成員函數(shù)，由此派生出自行車(bicycle)類、汽車(motorcar)類，從bicycle和motorcar派生出摩托車(motorcycle)類，它們都有Run、Stop等成員函數(shù)。觀察虛函數(shù)的作用。2. 實驗內(nèi)容及實驗步驟(1) 編寫程序定義Point類，在類中定義整型的私有成員變量_x_y，定義成員函數(shù)Point& operator+()；Point operator+(int)；以實現(xiàn)對Point類重載“+”(自增)運算符，定義成員函數(shù)Point operator()；Point operator(int)；以實現(xiàn)對Point類重載“”(自減)運算符，實現(xiàn)對坐標(biāo)值的改變。程序名：1ab8_1cpp。(2) 編寫程序定義一個車(vehicle)基類，有Run、Stop等成員函數(shù)，由此派生出自行車(bicycle)類、汽車(motorcar)類，從bicycle和motorcar派生出摩托車(motorcycle)類，它們都有Run、Stop等成員函數(shù)。在main()函數(shù)中定義vehicle、bicycle、motorcar、motorcycle的對象，調(diào)用其Run()、Stop()函數(shù)，觀察其執(zhí)行情況。再分別用vehicle類型的指針來調(diào)用這幾個對象的成員函數(shù)，看看能否成功；把Run、Stop定義為虛函數(shù)，再試試看。程序名：lab8_2cpp。3. 源程序Lab8_1#includeusing namespace std;class Pointpublic:Point(int X,int Y): _x(X),_y(Y)Point operator+();Point operator+(int);Point operator-(); Point operator-(int);void Putout() const;private:int _x,_y;void Point:Putout() constcout(_x,_y)endl;Point Point: operator+()_x+;_y+; return *this;Point Point:operator+(int)+_x;+_y; return *this;Point Point:operator-() _x-; _y-; return *this;Point Point:operator-(int)-_x;-_y; return *this;int main()Point A(6,7);coutPoint+: ;(A+).Putout();cout+Point: ;(+A).Putout();coutPoint-: ;(A-).Putout();cout-Point: ;(-A).Putout();return 0;運行結(jié)果Lab8_21）在main()函數(shù)中定義vehicle、bicycle、motorcar、motorcycle的對象，調(diào)用其Run()、Stop()函數(shù)。#includeusing namespace std;class Vehiclepublic:void Run()cout基類Vehicle的Run函數(shù)調(diào)用endl;void Stop()cout基類Vehicle的Stop函數(shù)調(diào)用endl;class bicycle :public Vehicle public: void Run()cout派生類bicycle的Run函數(shù)調(diào)用endl;void Stop()cout派生類bicycle的Stop函數(shù)調(diào)用endl;class motorcar :public Vehiclepublic: void Run()cout派生類motorcar的Run函數(shù)調(diào)用endl; void Stop()cout派生類motorcar的Stop函數(shù)調(diào)用endl;class motorcycle :public bicycle,public motorcarpublic: void Run()cout派生類motorcycle的Run函數(shù)調(diào)用endl; void Stop()cout派生類motorcycle的Stop函數(shù)調(diào)用endl;int main() Vehicle V; bicycle B; motorcar M; motorcycle Mc; V.Run(); V.Stop(); B.Run(); B.Stop(); M.Run(); M.Stop(); Mc.Run(); Mc.Stop(); return 0;運行結(jié)果2）用vehicle類型的指針來調(diào)用這幾個對象的成員函數(shù)。#includeusing namespace std;class Vehiclepublic:virtual void Run()cout基類Vehicle的Run函數(shù)調(diào)用endl;virtual void Stop()cout基類Vehicle的Stop函數(shù)調(diào)用endl;class bicycle :virtual public Vehicle public: void Run()cout派生類bicycle的Run函數(shù)調(diào)用endl;void Stop()cout派生類bicycle的Stop函數(shù)調(diào)用endl;class motorcar :virtual public Vehiclepublic: void Run()cout派生類motorcar的Run函數(shù)調(diào)用endl; void Stop()cout派生類motorcar的Stop函數(shù)調(diào)用endl;class motorcycle :public bicycle,public motorcarpublic: void Run()cout派生類motorcycle的Run函數(shù)調(diào)用endl; void Stop()cout派生類motorcycle的Stop函數(shù)調(diào)用Run(); p-Stop();int main() Vehicle V; bicycle B; motorcar M; motorcycle Mc; fun(&V); fun(&B);