You are taking quiz cppquiz.org/q/wlq24. After 0 of 10 questions, you have 0.00 points.

Question #190 Difficulty: 2

According to the C++17 standard, what is the output of this program?

    #include <iostream>

struct A {
  A(int i) : i(i) {}
  operator bool() const { return i > 0; }
  int i;
};

int main() {
  A a1(1), a2(2);
  std::cout << a1 + a2 << (a1 == a2);
}

Hint:

An implicit conversion sequence is used, and operator bool() const gets called. There is however no built-in operator+ or operator== for bools, so one more conversion is used in the sequence.

Answer:

Mode : Quiz

If you want to quit the current quiz and go back to training mode, click here.