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// Created by zing on 4/1/2020.

#include <iostream>

int main()

{

std::cout << true << '\n'; // true evaluates to 1

std::cout << !true << '\n'; // !true evaluates to 0

bool b{false};

std::cout << b << '\n'; // b is false, which evaluates to 0

std::cout << !b << '\n'; // !b is true, which evaluates to 1

std::cout << std::boolalpha; // print bools as true or false

std::cout << true << '\n';

std::cout << false << '\n';

//bool b2{ 4 }; // error: narrowing conversions disallowed

//std::cout << b2;

bool b1 = 4 ; // copy initialization allows implicit conversion from int to bool

std::cout << b1 << '\n';

bool b2 = 0 ; // copy initialization allows implicit conversion from int to bool

std::cout << b2 << '\n';

return 0;

}