Attacking an open-source software to promote another open-source software. You needed to do better dear Eclipse Foundation. This isn't the philosophy behind open-source.
edit:
Wait. Is this an early April fools' day joke?
Essential parts of C language are actually really a small set.
What I'd suggest is, learn syntax and try to understand linux kernel (which is one of the very well crafted software piece we have written in C). If you don't want to go that much of a deep dive, you can check sqlite source code as well. Writing code starts with reading it. Do yourself a favour and spend more time on reading code than reading books.
Thanks for explanations about visa for US. I also tried European and Canadian companies, however there was no chance. I will try to apply for US companies on January to increase the odds.
I'm Muslim and the problem is not about Islam. Problem is all about the people who want to gain money for themselves. I know a truth that makes sense anytime I remember; everything is related to money or sex in this world. Nothing else matters. Religion is just a tool to manage the money.