I built a programming language in C

Built a programming language from scratch in C. It has a lexer, parser, AST, bytecode compiler, stack VM, classes with inheritance, string interpolation, break/continue, compound assignment (+=), user modules, and a built-in static analyzer.

class Animal {
    fn init(name, sound) {
        self.name = name
        self.sound = sound
    }
    fn speak() {
        print self.name + " says " + self.sound
    }
}

class Dog extends Animal {
    fn init(name) {
        super(name, "woof")
    }
}

let d = Dog("Rex")
d.speak()

Learned more from this than from anything I've read. Compilers are not magic.
Source: github.com/aaka3h/lang