练40.1 小写变大写

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	zhuyinuo	4ms	536 KiB	C++98	139 Bytes	2025-1-21 10:02:04
AC	jihaoyuan	6ms	536 KiB	C++98	144 Bytes	2025-2-7 15:17:38
AC	pengtaifu	6ms	764 KiB	C++98	180 Bytes	2024-8-13 17:34:03
AC	wangliyang	6ms	324 KiB	C++98	140 Bytes	2024-8-14 15:07:31
AC	jiashixuan	6ms	536 KiB	C++98	120 Bytes	2024-8-13 20:32:54
AC	lihaorui	6ms	536 KiB	C++98	139 Bytes	2025-2-6 10:07:19