About this Playground
This is a fork of the Go Playground that communicates with an external compilation service that receives a Go program, compiles, links and runs the program inside a controlled machine, then returns the output.
There are limitations to the programs than can be run in this playground, but that really depends on the external compilation service. Chances are you're not going to be allowed to write to the filesystem or to use the network.
You can run an install your own playground that runs under your own restrictions, check out the Github's xiam/go-playground repository.