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C++ Quiz #130

decltype(x) Versus decltype((x))

hardTemplates

a is declared with decltype(x) and b with decltype((x)), the same variable with an extra pair of brackets. What is printed?

📄 Code

1#include <iostream>
2 
3int main() {
4    int x = 5;
5    decltype(x) a = x;
6    decltype((x)) b = x;
7    a = 10;
8    b = 20;
9    std::cout << x << " " << a << " " << b << "\n";
10    return 0;
11}