題目描述

求圓的周長和面積，已知圓類從shape抽象類繼承。

要求使用c++ class編寫程序。可以創(chuàng)建如下class

#include <iostream>
using namespace std;

const double pi = 3.14;

class Shape{
public:
Shape(){}
~Shape(){}
virtual double getArea() = 0;
virtual double getPerim() = 0;
};

class Circle: public Shape{
public:
Circle(double rad):radius(rad){}
~Circle(){}

/*補(bǔ)充這兩個(gè)函數(shù)*/
double getArea();
double getPerim();
private:
double radius;
};

int main() {
double radius;
cin >> radius;
Circle c(radius);
cout << c.getArea() << " " << c.getPerim() << endl;
}

輸入描述

輸入圓的半徑

輸出描述

輸出圓的周長和面積

樣例輸入

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10

樣例輸出

314 62.8 #include <iostream> using namespace std;const double pi = 3.14;class Shape{ public:Shape(){}~Shape(){}virtual double getArea() = 0;virtual double getPerim() = 0; };class Circle: public Shape{ public:Circle(double rad):radius(rad){}~Circle(){}/*補(bǔ)充這兩個(gè)函數(shù)*/double getArea();double getPerim(); private:double radius; };double Circle::getArea(){return (3.14*radius*radius); }double Circle::getPerim(){return (2*3.14*radius); }int main() {double radius;cin >> radius;Circle c(radius);cout << c.getArea() << " " << c.getPerim() << endl; }

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轉(zhuǎn)載于:https://www.cnblogs.com/qianxuejin/p/9079191.html

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