command-line interface

A Detailed Explanation of Python’s Special Name `__main__`

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A Detailed Explanation of Python's Special Name `__main__`

1. Introduction <span>__main__</span> is a special name in Python that identifies the top-level execution environment. It is used in the following two main scenarios: When a module is executed as the entry point of a program, its <span>__name__</span> attribute is set to <span>'__main__'</span>. In Python packages, the <span>__main__.py</span> file is used to provide the command-line … Read more

Implementing a Simple Calculator in C: Interface and Algorithm

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Implementing a Simple Calculator in C: Interface and Algorithm

In this article, we will learn how to implement a simple command-line calculator using the C programming language. This calculator will support basic arithmetic operations: addition, subtraction, multiplication, and division. We will start with the design of the user interface and then gradually implement the core algorithms. 1. Project Structure Our project will include the … Read more