#include <iostream>
#include <atomic>
class MyClass
{
public:
static std::atomic_bool onOrOff;
};
std::atomic_bool MyClass::onOrOff(false);
int main(int argc, const char * argv[]) {
std::cout << "It is: " << (MyClass::onOrOff? "on": "off") << "\n";
return 0;
}
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