You can check the code again, or consult a professional to answer.

Code is a source file written by programmers in the language supported by development tools. It is a set of clear rules, and information is represented in discrete form by characters, symbols or signal elements. The principles of code design include uniqueness, standardization and universality, expansibility and stability, easy identification and memory, short and unified format and easy modification. Source code is a branch of code. In a sense, source code is equivalent to code.