POSTEST PRAKTIKUM SDATA 3

#include <cstdlib>
#include <iostream>
using namespace std;
class Bilangan {
friend ostream& operator<<(ostream&, const Bilangan&);
friend istream& operator>>(istream&, const Bilangan&);
public:
Bilangan(int a0=0,float b0=0.0):a(a0),b(b0){}
void banding_int(const Bilangan&, const Bilangan&);
Bilangan& operator=(const Bilangan&);
Bilangan operator+(const Bilangan&)const;
Bilangan operator-()const;
//protected:
int a;
float b;
};
ostream& operator<<(ostream& out, const Bilangan& x)
{
out<<”Bagian Integer : “<<x.a<<endl;
out<<”Bagian float : “<<x.b<<endl;
return out;
}
Bilangan& Bilangan::operator=(const Bilangan& x)
{
a=x.a;
b=x.b;
return *this;
}
istream& operator>>(istream& in, Bilangan& x)
{
cout<<”\nMasukkan bagian Integer : “;
in>>x.a;
cout<<”\nMasukkan bagian float   : “;
in>>x.b;
return in;
}
Bilangan Bilangan::operator+(const Bilangan& x) const
{
Bilangan cc;
cc.a=a+x.a;
cc.b=b+x.b;
return cc;
}
Bilangan Bilangan::operator-() const
{
Bilangan x;
x.a=-a;
x.b=-b;
return x;
}

> bilchar.h
#include “bilangan.h”
class Bil_char:public Bilangan
{
friend ostream& operator<<(ostream&, const Bil_char&);
public:
Bil_char(int a0=0, int b0=0, char ch=’x'):Bilangan(a0,b0),c(ch){}
private:
char c;
};
ostream& operator<<(ostream& out, const Bil_char& x)
{
out<<”Bagian integer : “<<x.a<<endl;
out<<”Bagian float   : “<<x.b<<endl;
out<<”Bagian char    : “<<x.c<<endl;
return out;
}

> turunan.CPP
#include <iostream>
#include “bilchar.h”
using namespace std;
int main(){
Bilangan s,t(-2,3.14),d;
cout<<”Nilai awal s\n”<<s;
cout<<”Nilai awal t dari deklarasi\n”<<t;
s=t;
cout<<”Setelah di-assign t\n”;
cout<<”Nilai s\n”<<s;
cout<<”Masukkan nilai-nalai objek d”;
cin>>d;
cout<<”setelah d + t => \n”<<d+t;
cout<<”Nalai d dinegatifkan\n”<<-d;
Bil_char ss;
cout<<”Nilai awal ss\n”<<ss;
system(“PAUSE”);
}

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