nilang 0.4.1

A scripting language interpreter for Advent of Code
Documentation 
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fn step_function(n) {
  if (n % 2) == 0 {
    return n / 2;
  } else {
    return ((3*n) + 1);
  }
}

steps = 0;
x = int(read);

if x == null {
  print("Invalid integer");
  return;
}

while x != 1 {
  print(x);
  x = step_function(x);
  steps = steps + 1;
}

print(x);
print(steps);