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Question #121 Difficulty: 2

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

    #include <iostream>

int main() {
  int a = 10;
  int b = 20;
  int x;
  x = (a, b);
  std::cout << x;
}

Hint:

What effect does parentheses have on operator precedence?
What is the value of an expression involving the comma operator?

Answer:

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