23

#include <iostream>
#include <cstdlib>
#include <ctime>

using namespace std;

int a[10], n = 10;

//Generare
void Gener()
{
    srand(time(0));
    for(int i = 0;i < n; i++)
        a[i] = rand() % 10 + 1;
}

void Afisare1(int i)
{
    if(i < n)
    {
        cout << a[i] << " ";
        Afisare1(i+1);
    }
}
void Afisare2(int i)
{
    if(i < n)
    {
        Afisare2(i+1);
        cout << a[i] << " ";
    }
}

void SumCif(int n, int &s)
{
    if(n)
    {
        s += n % 10;
        SumCif(n/10, s);
    }
}

void Triunghi1(int n, int i)
{
    if(i <= n)
    {
        for(int j = 1; j <= i; j++)
        {
            cout << j << " ";
        }
        cout << "\n";
        Triunghi1(n, i+1);
    }
}

//1
void Put(int x, int n, int &p)
{
    if(n > 0)
    {
        p *= x;
        Put(x, n-1, p);
    }
}

//2
void Div(int n, int d)
{
    if(n != d)
    {
        if(n % d == 0) cout << d << " ";
        Div(n, d+1);
    }
}

//3
void PP(int n, int i)
{
    if(i <= n)
    {
        cout << i * i << " ";
        PP(n, i+1);
    }
}

//4
int SumElem(int i)
{
    if(i == n-1) return a[i];
    else return a[i] + SumElem(i+1);
}

int main()
{
    Gener();cout << "\n";
    Afisare1(1);cout << "\n";
    Afisare2(1);cout << "\n\n";

    int s = 0;n = 12345;
    SumCif(n, s);cout << s << "\n\n";

    Triunghi1(10,1);
    cout << "\n\n";

    //1
    int p = 1;
    Put(2, 10, p);
    cout << p << "\n\n";

    //2
    Div(1024, 2);
    cout << "\n\n";

    //3
    PP(5, 1);
    cout << "\n\n";

    //4
    Gener();cout << "\n";
    Afisare1(1);cout << "\n";
    cout << SumElem(0) << "\n\n";
    return 0;
}