Algoritma 14.1

#include <iostream>
using namespace std;

void garis() {
   cout<<"=============================================\n";
}

struct {
    string nama;
    string email;
} author;

class bujursangkar {
    private:
        //Variable Private
	    int panjang, lebar;
    public:
        //Prototipe Function
   	    void set_nilai(int x,int y);
   	    int luas();
};

void bujursangkar::set_nilai(int x, int y) {
    panjang = x;
  	lebar = y;
}

int bujursangkar::luas() {
	return panjang * lebar;
}

void cetak_author(string nama, string email) {
    garis();
    cout<<"Nama  : "<<nama<<endl;
    cout<<"Email : "<<email<<endl;
}

int main() {
    //Set Nilai Struct
    author.nama = "Dhafin Shabir Alfatih";
    author.email = "[email protected]";

    int p1, p2, l1, l2;
    //Create Object
	bujursangkar bs1;
	bujursangkar bs2;
    cout<<"Bujur Sangkar 1"<<endl;
    garis();
    cout<<"Panjang : <input>";cin>>p1;cout<<endl;
    cout<<"Lebar   : <input>";cin>>l1;cout<<endl;
  	bs1.set_nilai(p1,l1);
  	cout<<"Luas    : "<<bs1.luas();
    cout<<endl<<endl;
    cout<<"Bujur Sangkar 2"<<endl;
    garis();
    cout<<"Panjang : <input>";cin>>p2;cout<<endl;
    cout<<"Lebar   : <input>";cin>>l2;cout<<endl;
  	bs2.set_nilai(p2,l2);
  	cout<<"Luas    : "<<bs2.luas();
    cout<<endl<<endl;
    cetak_author(author.nama,author.email);
    return 0;
}