面向对象方法设计(小试)
题目：编写一个程序，输入矩形的长度和宽度，求解其周长和面积。
思路：对象：矩形；成员变量：长度和宽度；成员函数：周长、面积计算公式。
//program8.4.cpp
#include
using namespace std;
class CRectangle
{
public:
double w, h;
void oninitial(double wide, double high);
double area();
double range();
};
void CRectangle::oninitial(double wide, double high)
{
w = wide;
h = high;
}
double CRectangle::range()
{
return 2 * (w + h);
}
double CRectangle::area()
{
return w*h;
}
int main()
{
double w, h;
CRectangle A;
cin >> w >> h;
A.oninitial(w, h);
cout << "The cRectangle’s area is " << A.area() << endl;
cout << "The cRectangle has a perimeter of " << A.range() << endl;
getchar();
system(“pause”);
return 0;
}运行示例及计算结果