#include<iostream>
usingnamespace std;
int main()
{
char guess,r,b;
int num;
cout<<"\n\nEnter your Guess(r for RED, b for BLACK): ";
cin>>guess;
guess=tolower(guess);
while( guess!='r' or guess!='b')
{
cout<<"ERROR! You Entered \""<<guess<<"\"\nPlease Enter \"r\" or \"b\"";
cout<<"\n\nEnter your Guess(r for RED, b for BLACK): ";
cin>>guess;
guess=tolower(guess);
}
return 0;
}