Factorial

[SonniE]

White Shadow Sent Me an assignment he had in comp science it was
Description: Write a program that allows the user to enter a number greater than 1. If the number is not greater than one the program will ask then user again, until a valid number is entered. After a good number has been entered the program will tell the user what the factorial of the enter number is.
my version is

//SonniE's Factorial
#include <iostream>
using namespace std;
int main()
{
    double num, counter, result;
    cout <<"Welcome To SonniE's Factorial App";
    there:
    cout << "Enter Your Number To See its Factorial\nEnter Number: ";
    cin >> num;
    result = num;
    if (num <= 1)
    {
         cout << "\nInvalid Entry\n";
         goto here;
         
    }
    while (num > 1)
    {
          --num;
          result = result* num;
    }
          cout << "Result: " << result << "\n";
          cin.get();
          goto there;
here:
return 0;
}