Implement rand12() using rand6() in one line

#include <cstdlib> // for rand and srand
#include <ctime> // for time
#include <iostream>

using namespace std;

// Function that returns random numbers from 1 to 6 with
// equal probability
int rand6()
{
    // rand() will generate random numbers between 0 and
    // RAND_MAX with equal probability rand() % 6 returns
    // number from 0 to 5 with equal probability (rand() %
    // 6) + 1 returns number from 1 to 6 with equal
    // probability
    return (rand() % 6) + 1;
}

// The function uses rand6() to return random numbers from 1
// to 12 with equal probability
int rand12() { return rand6() + (rand6() % 2) * 6; }

// Driver code to test above functions
int main()
{
    // Initialize random number generator
    srand(time(NULL));
    int N = 12;

    int freq[N + 1] = { 0 };

    // call rand12() multiple times and store its results
    for (int i = 0; i < N * 100000; i++)
        freq[rand12()]++;

    // print frequency of numbers 1-12
    for (int i = 1; i <= N; i++)
        cout << freq[i] << " ";

    return 0;
}

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

// Assume rand6 generates a random integer between 1 and 6
int rand6() {
    return rand() % 6 + 1;
}

int rand12() {
    return (rand6() * 2) - (rand6() & 1);
}

int main() {
    // Seed the random number generator
    srand(time(0));

    // Generate a random number between 1 and 12
    int randomNum = rand12();

    // Print the random number
    std::cout << "Random number between 1 and 12: " << randomNum << std::endl;

    return 0;
}