Find out the list of table tennis three pairs of racers

VOL University has conducted two table tennis team competition, each out of three people. Team A is A, B, C three, B team for the X, Y, Z three persons to draw lots to decide the game list, a list of the game was to find out the players, A and X said he did not than, C and X said he did not , Z ratio, write a program to find three pairs of racers list.

#include <iostream>
using namespace std;
int main()
{
    char i,j,k;
    for (i='X';i<='Z';i++)
    {
        for (j='X';j<='Z';j++)
        {
            if (i!=j)
            {
                for (k='X';k<='Z';k++)
                {
                    if (i!=k && j!=k)
                    {
                        if (i!='X' && k!='X' && k!='Z')
                        {
                            cout<<"A--"<<i<<"  B--"<<j<<"  C--"<<k<<endl;
                        }
                    }
                }
            }
        }
    }
}