Number Guessing Game

#include <iostream>
#include <stdlib.h>
#include <time.h>

using namespace std;

int main()
{
    int g, n;

    play:
    srand (time(NULL));
    n = rand() % 20 + 1;
    system("cls");

    cout << "Number Guessing Game" << endl;
    cout << "*****************" << endl;
    cout << endl;
    cout << "The random number been generated" << endl;
    system("pause");

    while (g!=n)
    {
          system("cls");
          cout << "Number Guessing Game" << endl;
          cout << "********************" << endl;
          cout << "Guess: ";
          cin >> g; //Cin takes the input of user and stores it into the variable g
          }

          system("cls");
          cout << "You have found the number!" << endl;
          cout << "The number was " << n << endl;
          cout << "Press any key to play again" << endl;
          system("pause");
          goto play;

   return 0;
}