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Question #174 Difficulty: 1

According to the C++23 standard, what is the output of this program? 

    #include <iostream>

void f(int& a, const int& b) {
  std::cout << b;
  a = 1;
  std::cout << b;
}

int main(){
  int x = 0;
  f(x,x);
}

Hint:

Is x const?

Answer:

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