Using c++17 'structured bindings' feature in visual studio 2017 - c++

Question

I'm trying to utilize some c++17 features such as structured bindings in my code but the compiler keeps giving me errors and I'm not sure if it's because I'm doing things wrong or if I haven't setup c++17 properly to work in VS17. The simple code I'm trying to compile is this:
#include <iostream>
struct S
{
int i = 0;
float f = 32.0f;
};
int main()
{
S s;
auto [i, f] = s();
std::cin.get();
return 0;
}
From the understanding of this article, this is how I would use the new c++17 syntax to return multiple values. However, I keep getting these errors:
c:\users\jason\documents\visual studio 2017\projects\consoleapplication1\consoleapplication1\consoleapplication1.cpp(16): error C2059: syntax error: 'empty declaration'
1>c:\users\jason\documents\visual studio 2017\projects\consoleapplication1\consoleapplication1\consoleapplication1.cpp(16): error C2143: syntax error: missing ';' before '['
1>c:\users\jason\documents\visual studio 2017\projects\consoleapplication1\consoleapplication1\consoleapplication1.cpp(16): warning C4467: usage of ATL attributes is deprecated
1>c:\users\jason\documents\visual studio 2017\projects\consoleapplication1\consoleapplication1\consoleapplication1.cpp(16): error C2337: 'i': attribute not found
1>c:\users\jason\documents\visual studio 2017\projects\consoleapplication1\consoleapplication1\consoleapplication1.cpp(16): error C2337: 'f': attribute not found
1>c:\users\jason\documents\visual studio 2017\projects\consoleapplication1\consoleapplication1\consoleapplication1.cpp(16): error C2059: syntax error: '='
I've also tried setting the compiler switch to std:/c++latest inside the properties of the project but still no dice. What I'm I doing wrong?

Answer 1

As #KerrekSB noted in the comments, auto [i, f] = s(); should be auto [i, f] = s;.
You said that you're using VS2017 but then indicated that your compiler version is 19.00.24218, which is actually VS2015 Update 3... VC++ did not support structured bindings until VS2017 Update 3 (compiler v19.11.25503) — you need to update (or fix your project settings and/or build environment so that the correct compiler is used).

Answer 2

Only did a quick look at the page you linked but seems like you should have it like this:
#include <iostream>
struct S
{
int i = 0;
float f = 32.0f;
};
int main()
{
S s(); <--- You were missing the ()
auto [i, f] = s();
std::cin.get();
return 0;
}