要求必须有圆柱和四棱柱的计算,可以选作三棱柱
谢谢!!!!!
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- threenewbee 2016-05-19 07:34关注
#include <iostream> #include <cmath> using namespace std; double const PI = 3.14159265358979; class Point { private : double x; double y; public : Point(double nx = 0, double ny = 0) : x(nx),y(ny) {} double Getx() const { return x; } double Gety() const { return y; } void Setx(double nx) { x = nx; } void Sety(double ny) { y = ny; } friend double Disdance(const Point &a, const Point &b) { double mt1 = (a.x - b.x) * (a.x - b.x); double mt2 = (a.y - b.y) * (a.y - b.y); return sqrt(mt1 + mt2); } void Show() const { cout << "(" << x << "," << y << ")"; } }; class Orthogon { private : double length; // 矩形的长度 double width; // 矩形的宽度 public : Orthogon(double len = 0, double w = 0) : length(len),width(w) {} void Set(double len, double w) {length = len; width = w; } double GetGirth() const { return 2*(length + width); } double GetBasalArea() const { return length * width; } void Show() const { cout << "矩形底边长: " << length << endl; cout << "矩形底边宽: " << width << endl; cout << "矩形底面周长: " << GetGirth() << endl; cout << "矩形底面面积: " << GetBasalArea() << endl; } }; class Circle { private : Point centre; double radius; public : Circle() { centre = Point(0,0); radius = 0; } Circle(const Point ¢er,double r = 0) : centre(center),radius(r) {} void Set(const Point &pcen, double r) {centre = pcen; radius = r; } double GetGirth() const { return 2 * PI * radius; } double GetBasalArea() const { return PI * radius * radius; } void Show() const { cout << "圆心坐标: "; centre.Show();cout << endl; cout << "半径: " << radius << endl; cout << "矩形底面周长: " << GetGirth() << endl; cout << "矩形底面面积: " << GetBasalArea() << endl; } }; class Triangle { private : Point A; Point B; Point C; public : Triangle() { A = 0; B = 0; C = 0; } Triangle(const Point &pa, const Point &pb, const Point &pc) { A = pa; B = pb; C = pc; } void Set(const Point &pa, const Point &pb, const Point &pc) { A = pa; B = pb; C = pc; } double GetAB() const { return Disdance(A,B); } double GetBC() const { return Disdance(B,C); } double GetCA() const { return Disdance(C,A); } double GetGirth() const { return GetAB() + GetBC() + GetCA(); } double GetBasalArea() const { double a,b,c,p; a = GetBC(); b = GetCA(); c = GetAB(); p = (a + b + c) / 2.0; return sqrt(p * (p - a) * (p - b) * (p - c)); } void Show() const { cout << "顶点A: ";A.Show();cout << ", "; cout << "顶点B: ";B.Show();cout << ", "; cout << "顶点C: ";C.Show();cout << endl; cout << "边长: " << GetAB() << ", " << GetBC() << ", " << GetCA() << endl; cout << "周长: " << GetGirth() << endl; cout << "面积: " << GetBasalArea() << endl; } }; template<typename Type> class Podetium { private : Type base; double high; public : Podetium(const Type &bs, double h) : base(bs),high(h) {} double GetVolume() const { return high * base.GetBasalArea(); } double GetSurfaceArea() const { return base.GetGirth() * high + 2 * base.GetBasalArea(); } void Show() const { base.Show(); cout << "柱体高: " << high << endl; cout << "柱体表面积: " << GetSurfaceArea() << endl; cout << "柱体体积: " << GetVolume() << endl; } }; int main() { Point center(2,3); // 圆心坐标 Point po[3]; // 三角形顶点 Orthogon orth; // 声明矩形变量 Circle cle; // 声明圆变量 Triangle trg; // 声明三角形变量 double x,y,len,w,r,h; cout << "圆柱的半径:"; cin >> r; cout << "圆柱的高:"; cin >> h; cle.Set(center,r); // 构造圆 Podetium<Circle> pdtc(cle,h); // 构造圆柱体 pdtc.Show(); // 显示圆柱信息 cout << "长方体底边长:"; cin >> len; cout << "长方体底边宽:"; cin >> w; cout << "长方体的高:"; cin >> h; orth.Set(len,w); Podetium<Orthogon> pdto(orth,h); pdto.Show(); for(char c = 'A'; c <= 'C'; ++c) { cout << "三棱柱 " << c << " 点坐标:"; cin >> x >> y; po[c - 'A'].Setx(x); po[c - 'A'].Sety(y); } cout << "三棱柱的高:"; cin >> h; trg.Set(po[0],po[1],po[2]); Podetium<Triangle> pdtt(trg,h); pdtt.Show(); return 0; }
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