How to identify high-quality code written in procedural style?

High-quality procedural code is characterized by the following features:

• Readability: the code is easy to understand, structured, and logically organized.
• Modularity: functions perform a specific task and have clear input and output parameters.
• No duplication: repetitive code is extracted into separate functions.
• State management: minimal use of global variables, preference for local variables.
• Error handling: checks are in place and proper responses to exceptional situations.

An example of a simple function in procedural style in Python:

def calculate_area(width, height):
    if width <= 0 or height <= 0:
        raise ValueError('Dimensions must be positive')
    return width * height

area = calculate_area(5, 10)
print(f'Area: {area}')

This approach facilitates maintenance and testing of the code.