Programming C without variables is like, well, programming C without variables. They are so essential to the language that it doesn’t even require an analogy here. We can declare and use them as ...

Separating interface from implementation has many practical benefits. Here’s a simple way to do just that, in ANSI-standard C code. How do you organize medium-sized or larger C programs? Few C ...

Structures (or “structs” in C) allow you to group several related variables and treat them as one unit. They are a mechanism for extending the type system of the C language by introducing user-defined ...