Lox is a little programming language created by Bob Nystrom in his book Crafting Interpreters. This is my attempt at recreating it in C#. I've published a web based version of the interpreter here.

The interprer is still a work in progress as I've not finished the book yet.

Lox is a dynamically typed language, variables can have values of four types: nil, number (64-bit floating point numbers), boolean and string.

var x = 5.8;
var y;
y = 10;
var z = x * y;
var i = true;
print(i);
print(z);

var x = 250;
if (x % 2 == 0)
{
    print("Even");
}
else
{
    print("Odd");
}

var x = 0;
while(x < 10)
{
    if (x > 5)
        break;
        
    print(x);
    x = x + 1;
}

for (var i = 0; i < 10; i = i + 1)
{
    print("i is: " + i);
}

Functions can return something:

fun coolify(thing)
{
    return "cool " + thing;
}

print(coolify("app"));

Or return nothing:

fun doSomething() {
    print("Doing something...");
}

doSomething();

There are only two functions in the standard library:

pPrints the value to stdout:

print("Hello World!");
print(42);
print(true);

Returns the number of seconds since 0001-01-01:

print(clock());