ertemuan

Jumat, 08 April 2016

Bab 4



Kasus

4.1


#include <iostream>
 using namespace std;

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
class Banding{
                friend istream&operator>>(istream&,Banding&);
                public:
                                Banding(){};
                                void bandingkan(){
                                                if(A>B)
                                                cout<<"Bilangan terbesar = "<<A;
                                                else
                                                cout<<"Bilangan terbesar = "<<B;
                               
                                }
                               
                                private:
                                                int A,B;
};
istream& operator>>(istream&in, Banding& bilangan){
                cout<<"Bilangan Pertama =";
                in>>bilangan.A;
                cout<<"Bilangan Kedua = ";
                in>>bilangan.B;
                return in;
};
int main(int argc, char** argv) {
                Banding bilangan;
                cin>>bilangan;
                bilangan.bandingkan();

               
                return 0;
}


4.2a

#include <iostream>

using namespace std;

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
class Banding{
                friend istream& operator>>(istream&,Banding&);
                public:
                Banding(){};
                void bandingkan(){
                                if((x>y)&&(x>z))
                                cout<<"Bilangan terbesar = "<<x;
                                else if((y>x)&&(y>z))
                                cout<<"Bilangan terbesar = "<<y;
                                else
                                cout<<"Bilangan terbesar = "<<z;
                               
                }
                private:
                int x,y,z;              
};
istream& operator>>(istream& in, Banding& bilangan){
                cout<<"Bilangan pertama = ";
                in>>bilangan.x;
                cout<<"Bilangan kedua = ";
                in>>bilangan.y;
                cout<<"Bilangan ketiga = ";
                in>>bilangan.z;
                return in;
};
int main(int argc, char** argv) {
                Banding bilangan;
                cin>>bilangan;
                bilangan.bandingkan();
               
                return 0;
}

4.2b

#include <iostream>
using namespace std;

class Banding{
                friend istream& operator>>(istream&, Banding&);
                public:
                                Banding(){};
                                void bandingkan(){
                                                int maks = x;
                                                if (y>maks)maks=y;
                                                if (z>maks)maks=z;
                                                cout<<"Bilangan terbesar = "<<maks;
                                }
                                private:
                                                int x,y,z;};
                                                istream& operator>>(istream&in,Banding&bilangan){
                                                                cout<<"Bilangan pertama = ";
                                                                in>>bilangan.x;
                                                                cout<<"Bilangan kedua = ";
                                                                in>>bilangan.y;
                                                                cout<<"Biangan ketiga = ";
                                                                in>>bilangan.z;
                                                                return in;
                                               
};
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char** argv) {
                Banding bilangan;
                cin>>bilangan;
                bilangan.bandingkan();}
4.3

#include <iostream>
#include <math.h>
#include <conio.h>
using namespace std;

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
class Akar{
                friend ostream& operator<<(ostream&,Akar&);
                friend istream& operator>>(istream&, Akar&);
                public:
                                Akar();
                                int disk(){return B*B-4*A*C;}
                                float akar1(){return(-B+sqrt(disk()))/(2*A);}
                                float akar2(){return(-B-sqrt(disk()))/(2*A);}
                                void hitung_akar();
                                void cetak_disk(){cout<<"diskriminan = "<<disk()<<endl;}
                                void cetak_akar(){
                                cout<<"x1 = "<<akar1()<<endl;
                                cout<<"x2 = "<<akar2()<<endl;
                }
                private:
                                int A,B,C;
                                float x1,x2;
};
ostream& operator<<(ostream&out,Akar& keluaran){
                keluaran.cetak_disk();
                if(keluaran.disk()>=0)keluaran.cetak_akar();
                else out<<"Akar imajiner";
                return out;
}
istream& operator>>(istream&in,Akar& masukan){
                cout<<"Koefisien pangkat 2 = ";in>>masukan.A;
                cout<<"Koefisien pangkat 1 = ";in>>masukan.B;
                cout<<"Koefisien pangkat 0 = ";in>>masukan.C;
                return in;
}
Akar::Akar(){
                cout<<"Menghitung akar persamaan kuadrat\n";
}
void Akar::hitung_akar(){
                if(A==0){
                                cout<<"Bukan pers.kuadrat.\n";
                                cout<<"Harga akar = "<<-C/B;
                }else{
                                if(disk()>0){
                                                x1=akar1();
                                                x2=akar2();
                                }else if(disk()==0){
                                                x1=akar1();
                                                x2=x1;
                                }
                }
}
int main(int argc, char** argv) {
                Akar kasus;
                cin>>kasus;
                kasus.hitung_akar();
                cout<<kasus;
                return 0;
}

                4.4

#include <iostream>
using namespace std;

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
class Nilai{
                friend ostream&operator<<(ostream&,Nilai&);
                friend istream&operator>>(istream&,Nilai&);
                public:
                                Nilai(){};
                                void konversikan(){
                                                if((nilai>0)&&(nilai<=20))
                                                nilai_huruf='E';
                                                else if ((nilai>20)&&(nilai<=40))
                                                nilai_huruf='D';
                                                else if((nilai>40)&&(nilai<=60))
                                                nilai_huruf='C';
                                                else if((nilai>60)&&(nilai<=80))
                                                nilai_huruf='B';
                                                else
                                                nilai_huruf='A';
                                }
                                private:
                                                int nilai;
                                                char nilai_huruf;
};
istream&operator>>(istream&in, Nilai& masukan){
                cout<<"Masukkan nilai angka = ";
                in>>masukan.nilai;
                return in;
};
ostream&operator<<(ostream&out,Nilai&keluaran){
                out<<"Nilai angka = "<<keluaran.nilai<<endl;
                out<<"Nilai huruf = "<<keluaran.nilai_huruf;
}
int main(int argc, char** argv) {
                Nilai angka;
                cin>>angka;
                angka.konversikan();
                cout<<angka;
                return 0;
}

                4.5

#include <iostream>
using namespace std;

/* run this program using the console pauser or add your own getch, system("pause") or input loop */
class Kalender{
                friend ostream&operator<<(ostream&,Kalender&);
                friend istream&operator>>(istream&,Kalender&);
                public:
                                Kalender(){};
                                void adalah();
                                private:
                                                int hari_ke;
                                                char*hari;
};
void Kalender::adalah(){
                switch (hari_ke){
                                case 1: hari = "Senin";break;
                                case 2: hari = "Selasa";break;
                                case 3: hari = "Rabu";break;
                                case 4: hari = "Kamis";break;
                                case 5: hari = "Jumat";break;
                                case 6: hari = "Sabtu";break;
                                default : hari = "Minggu";break;
                               
                }
}
istream&operator>>(istream&in,Kalender&masukan){
                cout<<"Masukkan hari ke-";
                in>>masukan.hari_ke;
                return in;
}
ostream&operator<<(ostream&out,Kalender&keluaran){
                out<<"Hari ke-"<<keluaran.hari_ke<<" adalah "<<keluaran.hari<<endl;
                return out;
}
int main(int argc, char** argv) {
                Kalender tanggal;
                cin>>tanggal;
                tanggal.adalah();
                cout<<tanggal;
               
                return 0;
}


Latihan
1.        

#include <iostream>
#include <conio.h>
using namespace std;
class Banding {
friend istream& operator>>(istream&, Banding&);
public:
Banding() {};
void bandingkan() {
int maks = x;
if (y > maks) maks = y;
if (z > maks) maks = z;
cout << "Bilangan terbesar : " << maks;
}
private:
int x, y, z; };
istream& operator>>(istream& in, Banding& bilangan){
cout << "Bilangan pertama = ";
in >> bilangan.x;
cout << "Bilangan kedua = ";
in >> bilangan.y;
cout << "Bilangan ketiga = ";
cin >> bilangan.z;
return in;
};
main() {
Banding bilangan;
cin >> bilangan;
bilangan.bandingkan();
getch();
return 0;
}
2.        

#include<cstdlib>
#include<iostream>
#include <conio.h>
#include<math.h>
using namespace std;

class persamaan{

public:
 void persamaan_kuadrat();
 float rumus();
private:
 int  x,y,z;
 float x1,x2;
 float disk;
};

void persamaan::persamaan_kuadrat(){
 cout<<"masukkan nilai A :";
 cin>>x;
 cout<<"masukkan nilai B :";
 cin>>y;
 cout<<"masukkan nilai C :";
 cin>>z;

}
float persamaan::rumus(){
 disk=y*y-4*x*z;

 if (disk>0)
  {
   cout<<"Diskriminan="<<disk<<" Maka akar-akarnya adalah:"<<endl;
   x1=(-y+(sqrt(disk)))/(2*x);
    cout<<"x1 :"<<x1;
    cout<<endl;
   x2=(-y-(sqrt(disk)))/(2*x);
    cout<<"x2 :"<<x2;
  }
 else if(disk=0)
  {
   cout<<"Diskriminan="<<disk<<" Maka akar-akarnya adalah:"<<endl;
   x1=-y/2*x;
    cout<<"x1 :"<<x1;
    cout<<endl;
   x2=x1;
    cout<<"x2 :"<<x2;
  }
 else
  cout<<"akar imajiner";

}

int main(int argc, char *argv[])

{
persamaan X;
X.persamaan_kuadrat();
X.rumus();

return 0;

}
3.        

# include <iostream>
# include <conio.h>
#include <windows.h>
using namespace std;
int main()
{
    int NILAI;

    system("clrscr");

    cout<<"\n============================================\n";
    cout<<"Kode         Range Nilai\n";
    cout<<"\n============================================\n";
    cout<<" 1         00-20\n";
    cout<<" 2         21-40\n";
    cout<<" 3         41-60\n";
    cout<<" 4         61-80\n";
    cout<<" 5         81-100\n";
    cout<<"\n-------------------------------------------\n";
    cout<<"Silahkan pilih kode dari nilai anda =";cin>>NILAI;

    switch(NILAI)
    {
        case 1:
            cout<<"E";
        break;

        case 2:
            cout<<"D";
        break;

        case 3:
            cout<<"C";
        break;

        case 4:
            cout<<"B";
        break;

        case 5:
            cout<<"A";
        break;

        default:
            cout<<"Invalid";
        break;
    }

    getch();
}
4.        

#include <iostream>
#include <windows.h>
#include <string>

using namespace std;
int main()

{
   int B;
   float A;
   cout <<" masukan bilangan" << endl;
   cin >> A;
   B =A;
   if (A==B)
   {
      cout << "BilanganBulat" << endl;   }
   else
   {
      cout << "BilanganReal" << endl;   }
   system("PAUSE");
   return 0;
}
5.        

#include <cstdlib>
#include <iostream>
#include <stdio.h>

using namespace std;

int main()
{
 int bulan, tahun, hari;
 int jum_hari[12]=
 {31,28,31,30,31,30,31,31,30,31,30,31};
 char b1[10],b2[10],b3[10],b4[10],b5[10],b6[10],b7[10],
 b8[10],b9[10],b10[10],b11[10],b12[10];
 cout<<"\t\t--------------------------------------------\n";
 cout<<"\t\t>>MENENTUKAN JUMLAH HARI DALAM SUATU BULAN<<\n";
 cout<<"\t\t--------------------------------------------\n";
 cout<<"\n";
 cout<<"\t\tKeterangan\n";
 cout<<"\t\t-------------------------------------------\n";
 cout<<"\t\tBulan 1: Januari   | Bulan 7 :Juli\n";
 cout<<"\t\tBulan 2: Februari  | Bulan 8 :Agustus\n";
 cout<<"\t\tBulan 3: Maret     | Bulan 9 :September\n";
 cout<<"\t\tBulan 4: April     | Bulan 10:Oktober\n";
 cout<<"\t\tBulan 5: Mei       | Bulan 11:November\n";
 cout<<"\t\tBulan 6: Juni      | Bulan 12:Desember\n";
 cout<<"\t\t-------------------------------------------\n";
 cout<<"\t\tMasukkan Bulan (1--12) :";
 cin>>bulan;
 cout<<"\t\tMasukkan Tahun         :";
 cin>>tahun;
 if(bulan==2)
  {if(tahun &4==0)
   hari=29;
  else
   hari=28;
}
 else
  hari=jum_hari[bulan-1];
 cout<<"\t\t-------------------------------------------\n";
 cout<<"\t\tJumlah hari dalam bulan   :";
 cout<<bulan<<endl;
 cout<<"\t\tPada tahun                :";
 cout<<tahun<<endl;
 cout<<"\t\tDalam Satu Bulan Terdapat :",
 cout<<hari;
 cout<<"hari\n";
 cout<<endl;
 system("pause");
 return 0;
}

6.        

#include <iostream>
 #include <conio.h>
 using namespace std;
 class Karakter
 {
 private:
     char karakter;
 public:
  void Proses ();
  void Output ();
 };

 void Karakter::Proses()
 {
 cout<<"Masukkan Karakter = ";cin>>karakter;
 };

 void Karakter::Output(){
 if (karakter >='A' && karakter <='Z')
 cout<<"Huruf Besar"<<endl;
 else if (karakter >= 'a' && karakter <='z')
 cout<<"Huruf Kecil"<<endl;
 else if (karakter >= '0' && karakter <= '9')
 cout<<"Digit (Bilangan)"<<endl;
 else
 cout<<"Simbol"<<endl;
 };
 main ()
 {
 Karakter bilhur;
 bilhur.Proses();
 bilhur.Output();
 getch ();
 return 0;
 }
7.        

#include <iostream>
#include <conio.h>
using namespace std;
class Nilai {
                friend ostream& operator<<(ostream&, Nilai&);
                friend istream& operator>>(istream&, Nilai&);
                public:
                                Nilai() {};
                                void konversikan() {
                                if ((nilai > 0) && (nilai <= 60))
                                nilai_huruf = 'F';
                                else if ((nilai > 60) && (nilai <= 70))
                                nilai_huruf = 'D';
                                else if ((nilai > 70) && (nilai <= 80))
                                nilai_huruf = 'C';
                                else if ((nilai > 80) && (nilai <= 90))
                                nilai_huruf = 'B';
                                else nilai_huruf = 'A';
                }
                private:
                                int nilai;
                                char nilai_huruf;
};
istream& operator>>(istream& in, Nilai& masukan) {
                cout << "Masukkan nilai angka = ";
                in >> masukan.nilai;
return in;
};
ostream& operator<<(ostream& out, Nilai& keluaran) {
                out << "Nilai angka : " << keluaran.nilai << endl;
                out << "Nilai huruf : " << keluaran.nilai_huruf;
return out;
}
int main() {
                Nilai angka;
                cin >> angka;
                angka.konversikan();
                cout << angka;
}
8.        

#include <iostream>

using namespace std;
void first (int n) {
      switch (n) {
      case 1: cout << "satu "; break;
      case 2: cout << "dua "; break;
      case 3: cout << "tiga "; break;
      case 4: cout << "empat "; break;
      case 5: cout << "lima "; break;
      case 6: cout << "enam "; break;
      case 7: cout << "tujuh "; break;
      case 8: cout << "delapan "; break;
      case 9: cout << "sembilan "; break;
      case 10: cout << "sepuluh "; break;
      case 11: cout << "sebelas "; break;
      default: break;
      }
}
void second (int n) {
      int bul, sisa;
      bul = n / 10;
      sisa = n % 10;
      if (bul == 0)
            first (sisa);
      else if (bul == 1) {
            if (sisa <= 1)
                  first (n);
            else {
                  first (sisa);
                  cout << "belas ";
            }
      }
      else {
            first (bul);
            cout << "puluh ";
            first (sisa);
      }
}
void third (int n) {
      int bul, sisa;
      bul = n / 100;
      sisa = n % 100;
      if (bul == 0)
            second (sisa);
      else if (bul == 1) {
            if (sisa == 0)
                  cout << "seratus ";
            else {
                  cout << "seratus ";
                  second (sisa);
            }
      }
      else {
            first (bul);
            cout << "ratus ";
            second (sisa);
      }
}
void fourth (int n) {
      int bul, sisa;
      bul = n / 1000;
      sisa = n % 1000;
      if (bul == 0)
            third (sisa);
      else if (bul == 1) {
            if (sisa == 0)
                  cout << "seribu ";
            else {
                  cout << "seribu ";
                  third (sisa);
            }
      }
      else {
            third (bul);
            cout << "ribu ";
            third (sisa);
      }
}
void fifth (int n) {
      int bul, sisa;
      bul = n / 1000000;
      sisa = n % 1000000;
      if (bul == 0)
            fourth (sisa);
      else if (bul == 1) {
            if (sisa == 0)
                  cout << "satu juta ";
            else {
                  cout << "satu juta ";
                  fourth (sisa);
            }
      }
      else {
            third (bul);
            cout << "juta ";
            fourth (sisa);
      }
}
int main () {
      int n = 1;
      while (n == 1) {
            int num1;
            do {
                  cout << "";
                  cin >> num1;
            } while (num1 < 1);
            fifth (num1);
            cout << "\n";
      }
}

9.        

#include <iostream>
 #include <conio.h>
 #include <stdio.h>
 #include <string.h>
 #include <windows.h>
 using namespace std;
 main()
 {
 //input

 char nama_kar [20], pendidikan[5];
 float tunjangan, total;
 double gaji, jam_kerja, tot_kerja, uang_lembur, jam_lembur, kode;
 system("clrscr");
 cout<<"Program untuk menghitung gaji karyawan kontrak"<<endl;
 cout<<"PT. Master SSD"<<endl;
 cout<<"======================================="<<endl<<endl;
 cout<<"Masukan nama karyawan: ";
 gets(nama_kar);
 cout<<"Masukan kode pendidikan karyawan [1/2/3]: ";
 cin>>kode;
 cout<<"Masukan jumlah jam kerja: ";
 cin>>tot_kerja;

 //proses

 if (kode==1)
 {strcpy (pendidikan,"SMU adalah sebesar: Rp. ");
 tunjangan=800000*2.5/100;}
 else if (kode==2)
 {strcpy(pendidikan,"D3 adalah sebesar: Rp. ");
 tunjangan=800000*5/100;}
 else
 {strcpy(pendidikan,"S1 adalah sebesar: Rp. ");
 tunjangan=800000*7.5/100;}
 gaji=800000;

 //Total jam kerja per bulan adalah 192 jam.
 /*Minimal memasukan jam kerja 192 jam, karena dibawah itu
 akan menyebabkan nilai lembur menjadi minus
 dan akan mempengaruhi nilai total honor yang diterima.*/

 jam_kerja=8*6*4;
 jam_lembur=tot_kerja-jam_kerja;
 uang_lembur=jam_lembur*2500;
 total=uang_lembur+gaji+tunjangan;

 //output

 cout<<""<<endl<<endl;
 cout<<"Karyawan yang bernama: "<<nama_kar<<endl;
 cout<<"Honor yang diterima sebagai berikut:"<<endl<<endl;
 cout<<"Honor tetap Rp. "<<gaji<<endl;
 cout<<"Tunjangan pendidikan "<<pendidikan<<tunjangan<<endl;
 cout<<"Jumlah lembur: "<<jam_lembur;
 cout<<" jam x 2500 adalah sebesar Rp. "<<uang_lembur<<endl<<endl;
 cout<<"Total honor yang diterima Rp."<<total<<endl;
 getch();
 }
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