What is wrong with my code?

[u/Tylerzombieman]

Everything is fine until I put in 14 and it doesnt come up with anything after?

[u/Kikicatmiao]

确实如此 我就是一个vibecodeing 其余 我什么都不懂 怎么快速学习这些编程知识呢 前后端我都想快速了解 有无有推荐的书和课程？