Using array class to return array c++

Question

I have this function:

array<int, 2> foo() { array<int, 2> = nums; return nums;}

This returns the error "array does not name a type". Why is this?

array<int, 2> = nums; is also incorrect, you probably want array<int, 2> nums = {42, 42}; — Jarod42
– Jarod42, Commented Jul 19, 2018 at 16:10
@emsimpson92 because C style arrays are second class citizens — Caleth
– Caleth, Commented Jul 19, 2018 at 16:12

Caleth · Accepted Answer · 2018-07-19 16:11:41Z

7

The template is spelled std::array, not array, and requires you to #include <array> somewhere preceding that line

#include <array>

std::array<int, 2> foo() { return { 42, 42 }; }

answered Jul 19, 2018 at 16:11

Caleth

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Comments

Alex Johnson · Accepted Answer · 2018-07-19 16:16:01Z

1

You need to include array. And as was pointed out, you have the incorrect syntax for the array declaration.

Try this:

#include <array>

std::array<int, 2> foo() { 
  std::array<int, 2> nums; 
  return nums;
}

int main() {
  // use your function here
}

answered Jul 19, 2018 at 16:13

Alex Johnson

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If you aren't actually going to initialize anything you can just have return {}; in the function.

@NathanOliver Or just delete the function and leave main empty. Or just delete the program. Or turn off your computer... ;)

@LightnessRacesinOrbit But if I turn off the computer won't the internet get lonely? ;)

@NathanOliver It's okay we can just wake-on-LAN you if we get bored