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To some degree, that's true.
There are methods for findings leaks and so, thankfully. And there are lots of "verifier" programs out there that make sure you don't leak memory or handles, etc.

Oh...

The OS will clean up, so you don't lose any memory.

Oh yes, and though mats says technically it has no space - in every city, there is space take for other things than your own.
Some space in the city is reserved, and some space is used to store...

It is true. It's how it's done.
And it's actually an analogy I've thought up myself.

This won't work because you asked memory for 1 int, not 3.

As I like to see pointers...
Imagine a big city. The city must be addressable (ie, each part of it must have an address). This is so...