print("loaded math.ai");

pub const PI = 3.14;

pub fn add(x: int, y: int) -> int { // Available as math.add

return x + y;

}

pub fn sub(x: int, y: int) -> int { // Available as math.add

return x - y;

}

print(add(1,2));

print(PI);

pub class A {

fn test() {

print("test from A");

}

}

print("end of math.ai");

let global_variable = "abc";

if len(global_variable) > 1 {

let local_variable = "xyz";

print("I can access global variable:", global_variable);

}

// local variable is inaccessible outer of local scope,

// this print statement would

// print(local_variable);

const PI = 3.14;

print(PI); // print 3.14

PI = 3.1415; //