1. For most software development, there are not many requirements for pure mathematics, but higher requirements for logical thinking.

2. Being good at math is good for developing software. When you first entered the software industry, the starting point was low and the feeling was not obvious, but when you developed or made some creative software at the system level, you felt the importance of mathematics.

3. If you want to be a real software developer, the foundation of mathematics is definitely necessary. This is not just using an axiom or concept, but connecting with mathematical knowledge, building a model and solving problems when some difficult problems cannot be solved.

In mathematics, we can look at discrete mathematics and graph theory more. If you have time, buy a book about C or C++.