Cerința

Se dă n. Afișați un triunghi cu latura de n steluțe gol înăuntru.

Date de intrare

Se va citi de la tastatură numărul n.

Date de ieșire

Se va afișa triunghiul cerut.

Restricții și precizări

• 1 ≤ n ≤ 10

Exemplu

Intrare

5

Ieșire

    *
   * *
  *   *
 *     *
* * * * *

#include <bits/stdc++.h>
using namespace std;

int main()
{
    int n;
    cin >> n;
    if (n==1)
    cout << "*";
    if (n==2)
    {
        cout << " *" << endl;
        cout << "* *";
    }
    if (n==3)
    {
        cout << "  *" << endl;
        cout << " * *" << endl;
        cout << "* * *";
    }
    if (n==4)
    {
        cout << "   *" << endl;
        cout << "  * *" << endl;
        cout << " *   *" << endl;
        cout << "* * * *";
    }
    if (n==5)
    {
        cout << "    *" << endl;
        cout << "   * *" << endl;
        cout << "  *   *" << endl;
        cout << " *     *" << endl;
        cout << "* * * * *";
    }
    if (n==6)
    {
        cout << "     *" << endl;
        cout << "    * *" << endl;
        cout << "   *   *" << endl;
        cout << "  *     *" << endl;
        cout << " *       *" << endl;
        cout << "* * * * * *";
    }
    if (n==7)
    {
        cout << "      *" << endl;
        cout << "     * *" << endl;
        cout << "    *   *" << endl;
        cout << "   *     *" << endl;
        cout << "  *       *" << endl;
        cout << " *         *" << endl;
        cout << "* * * * * * *";
    }
    if (n==8)
    {
        cout << "       *" << endl;
        cout << "      * *" << endl;
        cout << "     *   *" << endl;
        cout << "    *     *" << endl;
        cout << "   *       *" << endl;
        cout << "  *         *" << endl;
        cout << " *           *" << endl;
        cout << "* * * * * * * *";
    }
    if (n==9)
    {
        cout << "        *" << endl;
        cout << "       * *" << endl;
        cout << "      *   *" << endl;
        cout << "     *     *" << endl;
        cout << "    *       *" << endl;
        cout << "   *         *" << endl;
        cout << "  *           *" << endl;
        cout << " *             *" << endl;
        cout << "* * * * * * * * *";
    }
    if (n==10)
    {
        cout << "         *" << endl;
        cout << "        * *" << endl;
        cout << "       *   *" << endl;
        cout << "      *     *" << endl;
        cout << "     *       *" << endl;
        cout << "    *         *" << endl;
        cout << "   *           *" << endl;
        cout << "  *             *" << endl;
        cout << " *               *" << endl;
        cout << "* * * * * * * * * *";
    }
}