Dastur kodi: #include

1-Amaliy topshiriq.
Mavzu: Fayllar bilan ishlash usullari va obyektga yo’naltirilgan dasturlash.
Butun sonli fayl berilgan. shu fay oxiriga birinchi elementni yozish orqali fayldagi elementar ikki martaga orttirilsin.
Dastur kodi:
#include
#include
using namespace std;
int main(){
ifstream in("input.txt");
ofstream out("output.txt");
string n, s = "";
while(in >> n){
cout << n << " ";
cout << n << " ";
s += n + " ";
}
cout << s;
out << s;
}
Natijasi:

2-amaliy topshiriq.
18 Muntazam olti burchakni ifodalovchi klass yarating.
Dastur ko’di:
#include
#include


using namespace std;


class Olti_burchak
{
public:
float a;
Olti_burchak()
{
void kirit();
{
cout << "a tomonni kiriting= ";
cin >> a;
}
}
};


class kopburchak: public Olti_burchak
{
public:
float h;
float Kattadiagnal,kichidiagnal,yuza;
kopburchak()
{
void hisobla();
{
Kattadiagnal=2*a;
kichidiagnal=3*sqrt(3);
yuza=3*(sqrt(3))*(pow(a,2))/2;
}
void chiqar();
{
cout << "Katta diagnali: " << Kattadiagnal << endl;
cout << "Kichik diagnali: " << kichidiagnal << endl;
cout << "yuza: " << yuza << endl;
}
}
};
int main()
{
cout << "Olti burchak \n\n";
kopburchak a;
return 0;
}

Natijasi: