//

// 2.7.decltype.cpp

// chapter 2 language usability

// modern cpp tutorial

//

// created by changkun at changkun.de

// https://github.com/changkun/modern-cpp-tutorial

//

#include <iostream>

#include <type_traits>

int main() {

auto x = 1;

auto y = 2;

decltype(x+y) z = 3;

if (std::is_same<decltype(x), int>::value)

std::cout << "type x == int" << std::endl;

if (std::is_same<decltype(x), float>::value)

std::cout << "type z == float" << std::endl;

if (std::is_same<decltype(x), decltype(z)>::value)

std::cout << "type z == type x" << std::endl;

return 0;

}