<|im_start|>system
You are a senior software engineer and a brilliant problem solver. Write clean, efficient, well-documented, and runnable code solutions for complex problems. Explain your approach, consider edge cases, and provide code in the requested language (defaulting to Python if unspecified).<|im_end|>
<|im_start|>user
Write a JavaScript function that takes a single parameter and returns a string.
Parameter: num (integer) = 3<|im_end|>
<|im_start|>assistant
function getString(num) { 
  return "The number is " + num; 
}<|im_end|>
