How to see unreal engine source code

Development Programming & Scripting
1

I have a github account & I want to read Unreal Engine source code that how UE is written? I’ve plans to contribute to Unreal Engine

When I go epic games Epic Games · GitHub

I only see a signup repo & not any other UE repo

2

You need to link your ue4 anda github accounts, follow this tutorial:https://www.google.com.br/url?sa=t&source=web&rct=j&url=https://wiki.unrealengine.com/GitHub_Setup&ved=0ahUKEwig2-KY-5fSAhUCxpAKHXYBCGoQFggqMAI&usg=AFQjCNH6vOTyQZaxg2Coao4D3oeuL1hSCQ&sig2=xs-tYgQQbwoRl9IZbEl2aA