Logical XOR operator in C++?

Question

Is there such a thing? It is the first time I encountered a practical need for it, but I don\'t see one listed in Stroustrup. I intend to write:

// Detect wh         


        

Answer 1

(A || B) && !(A && B)

The first part is A OR B, which is the Inclusive OR; the second part is, NOT A AND B. Together you get A or B, but not both A and B.

This will provide the XOR proved in the truth table below.

|-----|-----|-----------|
|  A  |  B  |  A XOR B  |
|-----|-----|-----------|
|  T  |  T  |   False   |
|-----|-----|-----------|
|  T  |  F  |   True    |
|-----|-----|-----------|
|  F  |  T  |   True    |
|-----|-----|-----------|
|  F  |  F  |   False   |
|-----|-----|-----------|