#include <type_traits>
#include <iostream>
#include <iomanip>
 
int main(void) {
	std::cout << std::boolalpha << std::is_same<char, decltype('a')>::value << "\n";
	std::cout << std::boolalpha << std::is_same<int, decltype('ab')>::value << "\n";
	std::cout << std::boolalpha << std::is_same<int, decltype(42)>::value << "\n";
	std::cout << std::boolalpha << std::is_same<const char[4], decltype("abc")>::value << "\n";
	std::string s = "abc";
	std::cout << std::boolalpha << std::is_same<std::string, decltype(s)>::value << "\n";
}

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