Looking for a simulator for Arduino

'm new to Adruino. I'm looking to learn to simulate my code offline before I actually build a live project. is there a way to do this offline simulation ?

Simulating a microprocessor is not always very useful because the simulator cannot mimic the real behaviour of external hardware, poor connections, accidentally incorrect connections etc.

…R

There are a few but quite often they are incomplete in some way.
Arduino themselves do NOT have such a simulator available to users.

Often it is better to have the hardware in front of you and use that.

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EDIT.
I removed your other post as there was not detail to it.