tugas 1 PBO

tugas 1 PBO
//Lutfi alamsyah
//201381065

#include <iostream>
#include <conio.h>
#include <iomanip>

using namespace std;

class p_panjang {
  private:
      int p,l;
  public:
      int luas()
      {
    return (p*l);
   }

   int keliling_persegi()
   {
    return (2*(p+l));
   }

      void beri_nilai (int p1, int l1)
      {
    p=p1;
    l=l1;
   }

     void beri_nilai_awal ()
      {
    p=7;
  l=10;
   }

   void beri_nilai_keliling(int p4, int l4){
    p=p4;
    l=l4;
   }

  void beri_nilai_keliling_berikutnya ()
      {
    p=8;
  l=5;
   }
};

main() {
  p_panjang a,b,c,d,e,f;
  int x,y,z,w;

    cout<<"========================================\n";
cout<<"Program Untuk Menghitungan Luas Persegi"<<endl;
cout<<"========================================\n";
cout<<"Panjang = ";
cin>>x;
cout<<"lebar    = ";
cin>>y;

a.beri_nilai(x,y);
b.beri_nilai(10,15);
c.beri_nilai_awal();

cout<<"\nLuas a = "<<a.luas();
cout<<"\nLuas b = "<<b.luas();
cout<<"\nLuas c = "<<c.luas();

  cout<<endl;
  cout<<endl;

  cout<<"============================================\n";
  cout<<"Program Untuk Menghitungan keliling Persegi"<<endl;
    cout<<"============================================\n";
  cout<<"Panjang = ";
  cin>>z;
  cout<<"lebar    = ";
  cin>>w;

  d.beri_nilai_keliling(z,w);
  e.beri_nilai_keliling(10,5);
f.beri_nilai_keliling_berikutnya();

  cout<<"\nKeliling d = "<<d.keliling_persegi();
  cout<<"\nKeliling e = "<<e.keliling_persegi();
  cout<<"\nKeliling f = "<<f.keliling_persegi();

  getch();
}