Shiny Pokémon Finder

//Shiny Pokémon
//Program by Hydreigon_Lord

#include <iostream>
#include <cmath>
using namespace std;

int main()
{
    srand(time(0));
    unsigned short trainerID = rand();
    cout << "Trainer ID = " << trainerID << endl;
    unsigned short secretID = rand();
    cout << "Secret ID = " << secretID << endl;
    int numAttempts = 0;
    unsigned int personalityValue = 0;
    while (true)
    {
        numAttempts++;
        personalityValue = (rand() << 16) + rand();
        unsigned short highWord = personalityValue >> 16;
        unsigned short lowWord = (personalityValue << 16) >> 16;
        unsigned short diff = (trainerID ^ secretID) ^ (highWord ^ lowWord);
        if (diff < 16)
        {
            cout << "Shiny found!\nDifference = " << diff << endl;
            break;
        }
    }
    cout << "Personality value = " << personalityValue << endl;
    cout << "Attempts = " << numAttempts << endl;
    return 0;
}