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An alternative to the ^= operator.
#define xor_eq ^=
Remarks
The macro yields the operator ^=.
Example
// iso646_xor_eq.cpp
// compile with: /EHsc
#include <iostream>
#include <iso646.h>
int main( )
{
   using namespace std;
   int a = 3, b = 2, result;
   result= a ^= b;
   cout << result << endl;
   a = 3;
   b = 2;
   result= a xor_eq b;
   cout << result << endl;
}
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Requirements
Header: <iso646.h>
Namespace: std