Question

So, I’m having some issues here implementing this math problem in C++.

Let’s say I have a game that involves two randomly generated outcomes, these outcomes can either be a win or loss.

The algorithm is explained here: http://imageshack.us/f/98/terriblyexplained.png/

For example, if the first six rounds of the game go win, loss, win, win, loss, loss, the odds of winning the 7th round of that would be 78.90625%, and the odds of losing would be 21.09375%.

How might I implement this scenario into a formula, and implement that into an algorithm I can run in C++?

Answer 1

#include <iostream>
#include <string>
int main()
{
    double WinChance = 0.5;
    double LossChance = 0.5;

    std::string result;
    while(std::cin >> result)
    {
       if(result == "Win")
       {
           WinChance /= 2.0;
           LossChance = 1.0 - WinChance;
       }
       else
       {
           LossChance /= 2.0;
           WinChance = 1.0 - LossChance;
       }
    }

    std::cout << "Winning Chance next round is " << WinChance  * 100.0 << std::endl;
    std::cout << "Losing  Chance next round is " << LossChance * 100.0 << std::endl;
}

Instead of inputting the result you can generate it randomly according to current WinChance.
Hope this helps.