总的来说这几道题,只有质心算法最坑,至今还没得到OJ上显示的输出结果,其他题做法基本类似。只有一些小的知识点不同。
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Problem H: 正方形、长方形、立方体
Submit: 805 Solved: 544
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Problem H: 正方形、长方形、立方体
Time Limit: 3 Sec Memory Limit: 128 MBSubmit: 805 Solved: 544
[Submit][Status][Web Board]
Description
给出正方形(Square)、长方形(Rectangle)、立方体(Cuboid)的边长,求周长、面积、体积。
Square类只需存一条边长,构造函数产生一条输出,有边长、周长、面积的函数。
Rectangle类需存长和宽,若从Square类派生而来,因此只需增加一条边,构造函数产生一条输出,有长、宽、周长、面积的函数。
Cuboid类需存长宽高,若从Rectangle类派生而来,因此也只增加一条边,构造函数产生一条输出,有长、宽、高、周长、面积、体积的函数。它的周长定义为所有棱长之和。
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请仔细阅读append.cc代码,并设计好正方形、长方形、立方体派生关系,使main()函数能够运行并得到正确的输出。
Input
输入分为三部分,每一部分都已一个整数n开始,表示后面有n组测试数据。
在第一部分测试数据中,每组是一个整数,表示正方形的边长。
在第二部分测试数据中,每组是两个整数,表示长方形的长和宽。
在第三部分测试数据中,每组是三个整数, 表示立方体的长和宽。
Output
每组测试数据对应的输出为两部分,前面是构造函数的输出,最后是输出图形的信息,包括长宽高、周长、面积、体积等信息,格式见sample;
Sample Input
1
4
1
3 4
1
3 4 6
Sample Output
Construct Square (4)
A Square length 4, Perimeter 16, Area 16
=========================
Construct Square (3)
Construct Rectangle (3, 4)
A Rectangle length 3, width 4, Perimeter 14, Area 12
=========================
Construct Square (3)
Construct Rectangle (3, 4)
Construct Cuboid (3, 4, 6)
A Cuboid length 3, width 4, height 6, Perimeter 52, Area 108, Volume 72
HINT
Append Code
#include<iostream> using namespace std; class Square{ protected: int l; public: Square(int ll=0):l(ll){cout<<"Construct Square ("<<l<<")"<<endl;} int length(){return l;} int perimeter(){return 4*l;} int area(){return l*l;} }; class Rectangle:public Square{ protected: int w; public: Rectangle(int ll,int ww):Square(ll),w(ww){cout<<"Construct Rectangle ("<<l<<", "<<w<<")"<<endl;} int width(){return w;} int perimeter(){return 2*(l+w);} int area(){return l*w;} }; class Cuboid:public Rectangle{ private: int h; public: Cuboid(int ll,int ww,int hh):Rectangle(ll,ww),h(hh){cout<<"Construct Cuboid ("<<l<<", "<<w<<", "<<h<<")"<<endl;} int height(){return h;} int perimeter(){return 4*(l+w+h);} int area(){return 2*(l*w+w*h+h*l);} int volume(){return l*w*h;} }; int main() { int cases, l, w, h; cin >> cases; for(int i = 1; i <= cases; ++i) { cin >> l; Square squa(l); cout << "A Square length " << squa.length() << ", "; cout << "Perimeter " << squa.perimeter() << ", "; cout << "Area " << squa.area() << endl; } cout << "=========================" << endl; cin >> cases; for(int i = 1; i <= cases; ++i) { cin >> l >> w; Rectangle rect(l, w); cout << "A Rectangle length " << rect.length() << ", width " << rect.width() << ", "; cout << "Perimeter " << rect.perimeter() << ", "; cout << "Area " << rect.area() << endl; } cout << "=========================" << endl; cin >> cases; for(int i = 1; i <= cases; ++i) { cin >> l >> w >> h; Cuboid cubo(l, w, h); cout << "A Cuboid length " << cubo.length() << ", width " << cubo.width() << ", height " << cubo.height() << ", "; cout << "Perimeter " << cubo.perimeter() << ", "; cout << "Area " << cubo.area() << ", "; cout << "Volume " << cubo.volume() << endl; } }