c++ - How can I check whether multiple variables are equal to the same value?

Question

How do I compare multiple items? For example, I wish to check if all the variables A, B, and C are equal to the char 'X' or all three are equal to 'O'. (If 2 of them are X and one is O it should return false.)

I tried:

if (A, B, C == 'X' || A, B, C == 'O') 
  {
    //Do whatever
  }

but it didn't work. What is the best way to do this?

Answer 1

if((A == 'X' || A == 'O') && A == B && B == C)
{
    // Do whatever
}