Tiwariji writes.

Overview When you call int x = 0; in your code, where and how is that x stored? This is the question that I wanted to know the answer of. And in this essay, we’ll look at just that. And Why should you care? As we will understand later in the article, there are issues and subtle bugs that come when programmers don’t understand their code. Hackers want to figure out ways to exploit those bugs and gain entery into people’s systems. So knowing how, why, and where of your data, in your system is not only useful, I’d say it’s necessary. ...

do you know how your code int f(){ return 42; } turns into mov eax, 42 ret and then into B8 2A 00 00 00 C3 this? Here’s the whole essay in short: source code → something happens, Intermediate code forms → something happens again, Machine code is formed. We’ll clear the ‘something’ in this article. Life would be very simple if we humans could write 1s and 0s and directly give machine it’s prefered machine code. But since we don’t have 1000 hands per person and the outputs that we’re expecting out of computers have evolved to complexities unimaginable, we need another simpler way to talk to the machines. And that is why we have different programming languages and their compilation processes. ...