//==========================================

{
int a=9 , b=5;
float c=9.0, d=5.0;

//endl = koniec linii

cout<<" 1.dodawanie" << endl; //endl = koniec linii
cout<<a<<"+"<<b<<"="<<a+b<<endl;

cout<<" 2.odejmowanie" << endl;
cout<<a<<"-"<<b<<"="<<a-b<<endl;

cout<<" 3.mnozenie" << endl;
cout<<a<<"*"<<b<<"="<<a*b<<endl;

cout<<" 4.dzielenie calkowite liczb calkowitych"<<endl;
cout<<a<<"/"<<b<<"="<<a/b<<endl;

cout<<" 5.dzielenie zwykłe liczb rzeczywistych" <<endl;
cout<<c<<"/"<<d<<"="<<c/d<<endl;

cout<<" 6. reszta z dzielenia całkowitego" <<endl;
cout<<a<<"%"<<b<<"="<<a%b<<endl;

cout<<" 7.potęgowanie z uzyciem biblioteki math.h lub cmath"<<endl;
cout<<a<<"^"<<b<<"="<<pow(a,b)<<endl;

return 0;
}

===============================================

======================= program 1========================

#include <iostream>

using namespace std;

int main()

{
    for(int i=1;i<=10;i++)
   {
       cout<<i<< " do kwadratu = " <<i*i<<endl;
    }
return 0;
}

====================== program 2 =========================

#include <iostream>

#include <math.h>

using namespace std;

int main()

{

    cout<<"Tablica pierwiastków"<<endl;
    for(int i=1;i<=100;i++)
   {
       cout<<" Pierwiastek z liczby "<<i<< " = " <<sqrt(i)<<endl;
    }
return 0;
}

============================ NWD ==================================
#include <iostream>
#include <cstdlib>

using namespace std;

int main()
{
    int a, b;
    cout << "Podaj pierwsza liczbe: ";
    cin >> a;
    cout << "Podaj druga liczbe: ";
    cin >> b;

    do
    {
        if(a > b) {
            a = a - b;
        } else {
            b = b - a;
        }
    }
    while(a != b);

    cout << "Najwiekszy wspolny dzielnik: " << a << endl;

    system("PAUSE");

    return 0;
}

=======================================================================