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//Le Dinh Hieu
//06-HTTT
//0650070018
//Bai tap hinh chu nhat
#include<iostream>
#include<cmath>
using namespace std;
class HinhChuNhat
{
	private:
		float x1,x2,y1,y2,rong = 0,dai = 0,DienTich = 0,ChuVi = 0;
	public:
		HinhChuNhat();
		HinhChuNhat(float x1, float y1, float x2, float y2);
		float TinhChieuDai();
		float TinhChieuRong();
		float TinhChuVi();
		float TinhDienTich();
		void Nhap();
		void Xuat();
		void Vehinh();		
};

HinhChuNhat::HinhChuNhat()
{
	x1 = 1;
	y1 = 1;
	x2 = 1;
	y2 = 1;
}

HinhChuNhat::HinhChuNhat(float X1, float Y1, float X2, float Y2)
{
	x1 = X1;
	y1 = Y1;
	x2 = X2;
	y2 = Y2;
}

float HinhChuNhat::TinhChieuDai()
{
	dai = fabs(y2) + fabs(y1);//tri tuyet doi
	return dai;
}

float HinhChuNhat::TinhChieuRong()
{
	rong = fabs(x2)+ fabs(x1);//tri tuyet doi
	return rong;
}

float HinhChuNhat::TinhChuVi()
{
	ChuVi = (dai + rong)*2;
	return ChuVi;
}

float HinhChuNhat::TinhDienTich()
{
	DienTich = dai * rong;
	return DienTich;
}

void HinhChuNhat::Nhap()
{
	cout<<"\nNHAP VAO TOA DO DIEM THU NHAT:\n";
	cout<<"X1:= ";
	cin>>x1;
	cout<<"Y1:= ";
	cin>>y1;
	cout<<"\nNHAP VAO TOA DO DIEM THU HAI:\n";
	cout<<"X2:= ";
	cin>>x2;
	cout<<"Y2:= ";
	cin>>y2;
}

void HinhChuNhat::Xuat()
{
	TinhChieuDai();//khai bao
	TinhChieuRong();
	TinhChuVi();
	TinhDienTich();
	cout<<"CHIEU DAI:= "<<dai<<endl;
	cout<<"CHIEU RONG:= "<<rong<<endl;
	cout<<"CHU VI:= "<<ChuVi<<endl;
	cout<<"DIEN TICH:= "<<DienTich<<endl;
}

void HinhChuNhat::Vehinh()
{
	TinhChieuDai();
	TinhChieuRong();
    for(int i=0;i<rong;i++)
    {
        for(int j=0;j<dai;j++)
            if(i==0||i==rong-1||j==0||j==dai-1)
                cout<<("* ");
            else
                cout<<("  ");
        cout<<("\n");
    }
}
int main()
{
	HinhChuNhat hinhcn;
	hinhcn.Nhap();
	hinhcn.Vehinh();
	hinhcn.Xuat();
	system("pause");
	return 0;
}

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