Friday 29 April 2016

Bingo Game in C++

Once I was responsible of organising a bingo night and I wrote the following C++ code to make the game possible and allow myself to participate as well!

Since we were all programmers there, we enjoyed the idea of having our C++ code for playing the Bingo. By the end, I got slightly accused of customising the game in the favour of the event's organisers. Well, random is random and it wasn't my fault that we won the first two prizes!

The idea of the code is simple:
1. Firstly, an array of 100 elements is created and initialised to contained the values from 0 to 99 inclusive
2. Secondly, the array is shuttle using a random seed.
3. Then, the game starts! Every time the user presses 'enter' the next number inside the array is printed on the screen
4. and if there is a winner, the user may press 'b' to break the loop and end the game

The code of the Bingo is here:


#include < vector >
#include < iostream >
#include < time.h >
#include < stdlib.h >

int main(void)
{
    // create and initialise an array containing the values 0-99
    unsigned int legth = 100;
    std::vector < unsigned short int > m_bingoNumbers(legth);
    for(unsigned int i=0; i < m_bingoNumbers.size(); ++i)
    {
       m_bingoNumbers[i] = i;
    }

    // shuffle the array
    srand(time(NULL));
    for(unsigned int i=0; i< legth*2; ++i)
    {
       unsigned int rand1 = rand()%100;
       unsigned int rand2 = rand()%100;
       unsigned short int temp = m_bingoNumbers[rand1];
       m_bingoNumbers[rand1] = m_bingoNumbers[rand2];
       m_bingoNumbers[rand2] = temp;
    }

    // print numbers one by one 
    char b;
    for(unsigned int i=0; i< m_bingoNumbers.size(); ++i)
    {
       std::cin >> std::noskipws >> b;
       if(b=='b')
       {
           break;
       }
       if(b=='\n')
       {
          std::cout << " " << m_bingoNumbers[i];
       }
    }
    std::cout << "\n";
    return 0;
}


Here, there is also an example on how to compile and run the game:

$: g++ main.cpp -o bingo
$: ./bingo

 99
 4
 2
 50
 80
 41b