Bab 2 nomor 1 dan 4

BAB 2

nomor 1

a. #include<iostream>

#include<conio.h>

using namespace std;

class waktu{

friend ostream& operator<<(ostream&, waktu&);

friend istream& operator>>(istream&, waktu&);

private:

float waktu,detik,detikl,menitl,jaml;

public:

float coba_jam(){

detikl - detik; }

float coba_menit(){

menitl - detik/60; }

float coba_detik(){

jaml = detik/3600; }

};

istream& operator >> (istream& yes, waktu& no){

cout<<"masukan detik : ";

yes>> no.detik;

return yes;}

ostream& operator >> (ostream& ya, waktu& tidak){

ya<< "detik : "<<tidak.detikl<<endl;

ya<< "menit : "<<tidak.menitl<<endl;

ya<< "jam : "<<tidak.jaml<<endl;}

int main(){

waktu alpro;

cin>>alpro;

alpro.coba_jam();

alpro.coba_menit();

alpro.coba_detik();

cout<< alpro;

}

Hasil Output

b. #include "iostream"

using namespace std;

class jum

{

public:

      int x,y;

      jum () {};

      jum (int xx, int yy)

      {

            x=xx;

            y=yy;

      }

      void tampil ()

      {

            cout<<"Input Nilai X    = ";cin>>x;

            cout<<"Input Nilai Y    = ";cin>>y;

      }

      jum jum::operator + (jum ku);

};

jum jum::operator + (jum ku)

{

      jum temp;

      temp.x = x + ku.x;

      temp.y = y + ku.y;

      return (temp);

}

int main()

{

      jum a(3,5);

      jum b(1,2);

      a.tampil ();

      b.tampil ();

      jum c;

      c= a + b;

      cout<<endl;

      cout<<"Hasil Penjumlahan 2 Himpunan = "<<c.x<<","<<c.y<<endl;

      system ("pause");

      return 0;

}

Hasil Output

c. #include <iostream>

using namespace std;

void sapaDuniailkom() {

  cout << "Halo Duniailkom" << endl;

}

int main()

{

  sapaDuniailkom();

  sapaDuniailkom();

  sapaDuniailkom();

  return 0;

}

Hasil Output

Nomor 4

#include<iostream>

using namespace std;

class bilangan{

friend ostream& operator << (ostream&, const bilangan&);

friend istream& operator << (istream&, bilangan&);

public:

friend istream& operator >> (istream &in, bilangan& bulat){

cout<<"masukan bilangan pertama: ";

in >> bulat.a;

cout<<"masukan bilangan kedua: ";

in >> bulat.b;

bulat.c = bulat.a + bulat.b;

bulat.d = bulat.a - bulat.b;

bulat.f = bulat.a * bulat.b;

bulat.g = bulat.a / bulat.b;

return in;

}

friend ostream& operator << (ostream& out, bilangan& bulat){

out<<bulat.a <<"+"<<bulat.b<<"="<<bulat.c<<endl;

out<<bulat.a <<"-"<<bulat.b<<"="<<bulat.d<<endl;

out<<bulat.a <<"*"<<bulat.b<<"="<<bulat.f<<endl;

out<<bulat.a <<"/"<<bulat.b<<"="<<bulat.g<<endl;

return out;

}

private:

int a,b,c,d,f,g;

}x;

int main(){

cin>>x;

cout<<x;

}

Hasil Output