C++ code not working

What is wrong with this code? I think it has to do with the char variable but it just messes up whenever it askes for a y or n input.

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#include <stdafx.h>
#include <iostream>
#include <iomanip>
#include <cstdlib> //for rand() function
#include <ctime> // for srand() function
using namespace std;

int main()
{
    int frequencyHeads = 0;
    int frequencyTails = 0;
    int loopCount = 0; //count the repetition of coin toss
    int coinToss; // 1 for head, 2 for tail
    char yesNo;

    srand( time( NULL )); //seed value for the random number generator

    //format floating-point numbers
    cout << fixed << showpoint << setprecision(2);

    cout << "Do you want to continue the game? "
        << " (Y for yes and N for no.)\n";
    cin >> yesNo;

    //Table heading
    cout << "\n\nFrequency of heads  "
        << "Frequency of tails  "
        << "Ratio of heads / tails\n";
    cout << "------------------  ------------------  "
        << "----------------------\n";


    //Add your code here whatever you see fits.
   
    while(yesNo == 'y') {
        cout << "\n\n" << frequencyHeads
             << " " << frequencyTails
        << " " << coinToss;

        while( loopCount < 100)//do not modify this loop body
        {
            //generate a random number, 1 or 2
            coinToss = rand() % 2 + 1;

            if( coinToss == 1 )
                frequencyHeads++;
            if( coinToss == 2 )
                frequencyTails++;

            loopCount++;
        }//No modification-Restriction ends here.

        //Add your code again from this point on
        //to complete the program
       
        cout << "Do you want to continue the game? "
        << " (Y for yes and N for no.)\n";
        cin >> yesNo;
    }
   
    cout << "GameOver: Thank you!";
    cout << endl << endl;

    return 0;
}

well the first error is that you never initialized the coinToss variable, and you try to output it on line 37 before you put any value into it.  that will cause the program to abort in debug mode.