main.c(6): warning: #1-D: last line of file ends without a newline
解决：main.c 最后一行加回车就可以了。
keil中文注释出现乱码怎么解决
解决：keil–edit–configuration中encoding改为chinese-GB2312
https://wenku.baidu.com/view/2f1e35dd77eeaeaad1f34693daef5ef7ba0d12a3.html
http://www.keil.com/dd2/pack
https://jingyan.baidu.com/article/454316ab7ad711f7a7c03a1a.html