BullsAndCows.cpp

// This source code written by Roland Ihasz 
#include <iostream>
#include <vector>
#include <cstdlib>
#include <ctime>
using namespace std;

int randint(int min, int max){
    srand(static_cast<unsigned int>(time(0)));
    return (min < max) ? ((rand() % ((max+1)-min)) + min) :
        ((rand() % ((min+1)-max)) + max);
}

int main()
{
    vector<int> bc;
    vector<int> bcUser;
    vector<int> bulls;
    vector<int> cows;
    int n=1;
    int sum (0);
    int x;
    cout << "Welcome to “Bulls and Cows” game. Please try to guess my secret 4-digit number." << endl;
    cout << "Please enter an integer value between 2 and 10: ";
    cin >> x;

    int srand(x);
    int a = randint(x,2);
    int b = randint(x,3);
    int c = randint(x,4);
    int d = randint(x,5);
    bc.push_back(a);
    bc.push_back(b);
    bc.push_back(c);
    bc.push_back(d);

    cout << a << " " << b << " " << c << " " << d << endl;

    while (n<100)
    {
        cows.clear();
        bcUser.clear();
        bulls.clear();
        cout << endl << n <<". " << endl;
        for (int i = 0; i<=3; i++)
        {
            int user;
            cout << "Enter your "<< i+1 <<". digits guess: ";
            cin >> user;
            bcUser.push_back(user);
        }

        for (int i = 0; i<=3; i++)
        {
            if (bc[i]==bcUser[i])
            {
                bulls.push_back(bc[i]);
            }
        }

        if (bulls.size() == 4)
        {
            cout << endl << bulls.size() << " Bulls and " << cows.size() << " Cows. Well done!" << endl;
            return 0;
        }


        if (bulls.size() < 4)
        {

            for (int i = 0; i<=3; i++)
                {
                if (bc[i]!=bcUser[i] && bc[i]==bcUser[0])  // first number
                {
                    cows.push_back(bc[i]);
                }

                if (bc[i]!=bcUser[i] && bc[i]==bcUser[1])  // second number
                {
                    cows.push_back(bc[i]);
                }

                if (bc[i]!=bcUser[i] && bc[i]==bcUser[2])  // third number
                {
                    cows.push_back(bc[i]);
                }

                if (bc[i]!=bcUser[i] && bc[i]==bcUser[3])  // fourth number
                {
                    cows.push_back(bc[i]);
                }

            }
        }
        ++n;
        cout << bulls.size() << " Bulls and " << cows.size() << " Cows." << endl;
     }
        return 0;
}