More than one way to code!

/////////////////MY NUMBER GUESSING CODE FOLLOWED BY CS BOOK CODE////////

// number guessing
#include <iostream>
#include <cstdlib>
#include <ctime>

using namespace std;

int main()
{
    int guess, noOfGuess = 0, number;
    number = (rand() + time(0)) % 100;

    while (guess != number && noOfGuess != 5)
    {
        cout << "Guess the number: ";
        cin >> guess;
        cout << endl;

        if (guess < number)
        {
            cout << "Guess too low!" << endl;
            noOfGuess++;
        }
        else if (guess > number)
        {
            cout << "Guess too high!" << endl;
            noOfGuess++;
        }
        else
        {
            cout << "You guessed it! The number is: " << number << endl;
        }
    }

    if (noOfGuess == 5)
        cout << "You lose, too many guesses! The number is: " << number << endl;

    return 0;
}


////??????????????? BOOKS NUM GUESS????????????????????????////

// Flag-controlled while loop.
// number guessing game

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

using namespace std;

int main()
{
    int num;
    int guess;
    int noOfGuesses;
    bool done;

    num = (rand() + time(0)) % 100;

    noOfGuesses = 0;

    done = false;

    while ((noOfGuesses < 5) && (!done))
    {
        cout << "Enter an integer greater than or equal to 0 and less than 100: ";
        cin >> guess;
        cout << endl;
        noOfGuesses++;

        if (guess == num)
        {
            cout << "Winner! You guessed the correct number." << endl;
            done = true;
        }
        else if (guess < num)
            cout << "Your guess is lower than the number.\nGuess again!" << endl;
        else
            cout << "Your guess is higher than the number.\nGuess again!" << endl;
    }

    if (!done)
        cout << "You lose! The correct number is " << num << endl;

    return 0;
}