How does the code from the book work?

Question

Unity

I use the book "Unity in action" and I write this code in a script:
"
and it underlines the error:


tell me how they differ and if they don't differ why?

Answer 1

Open the unit manual and read how GetComponent works. Or turn on your brain and think - WHAT component should the method return to you

Answer 2

the person above, wanted to say that in GetComponent () <> in <> you need to specify a specific component.

Answer 3

GetComponent(typeof(_camera));