C/C++ guidance needed

I’m an ECE student looking to build a strong resume, especially if I want to enter VLSI or related domains. I know C and C++ are important, but I’m not sure how much depth is actually needed for an ECE resume.

Should I just focus on the basics, or go deeper into advanced concepts?

Are there specific projects or topics in C/C++ that make a resume stand out?

Also, which are the best courses or platforms around that can help me learn C/C++ effectively for ECE/VLSI work?

Any guidance or recommendations would be super helpful!

Thanks in advance.