#include <iostream>

using namespace std;

int main()
{
    ///afiseaza o propozitie la ecran
    cout << "Hello world!\n";
    ///se va afisa 4
    cout<<2+2<<"\n";


    ///principalii operatori in C++:
    ///+
    ///-
    ///* inmultire
    ///catul impartirii, adica /
    ///restulimpartirii, adica %

    cout<<10/3<<"\n";///se va afisa 3
    cout<<10%3<<"\n";///se va afisa 1

    int x;///declar variabila x
    x=10;///ii dau lui x valoarea 10
    cout<<x/3<<"\n";///se afiseaza 3

    x=2;
    cout<<x<<"\n";///se afiseaza 2

    x = x+1;
    cout<<x<<"\n";

    cout<<"\n\n\n";
    cout<<"Introduceti doua numere:\n";
    int a,b;
    cout<<"a=";
    cin>>a;

    cout<<"b=";
    cin>>b;

    cout<<"a+b="<<a+b<<"\n";
    return 0;
}