My understanding is that the boundary effect in computer programming should mean that during the process of programming, our programming ideas, algorithms, and analysis and test data may approach things that we have not noticed. border. All operation designs will have a boundary, just like the memory of integer data is also regular. In many cases, we often ignore it when designing programs, but during testing, these boundary values ????are within the limits we designed. Whether the program is easy to use and can achieve boundary-worthy effects is not certain. I think it requires a lot of practice to get the results. Therefore, when designing programs, try to avoid the data involved being close to the boundary value or exceeding the boundary value. Try to fit as much as we need into it. to ensure the accuracy of its data results.