用for语句打印一行星号（20个）

状态	递交者	时间	内存	语言	代码	递交时间
AC	lisibo	2ms	13.1 MiB	C++17	256 Bytes	2023-7-8 20:17:08
AC	lishengcheng	2ms	11.8 MiB	C++17	144 Bytes	2023-7-20 16:34:23
AC	wangziqian	2ms	13.1 MiB	C++17	165 Bytes	2023-7-2 15:28:02
AC	lishengcheng	2ms	11.8 MiB	C++17	144 Bytes	2023-7-20 16:34:09
AC	zhangjiayi	4ms	12.2 MiB	C++11(O2)	154 Bytes	2024-2-4 23:36:13
AC	songyitian	4ms	15.2 MiB	C++11(O2)	108 Bytes	2024-10-11 19:26:05
AC	sunyian	4ms	15.2 MiB	C++11(O2)	114 Bytes	2024-10-11 18:55:15
AC	chenyixin	10ms	13.1 MiB	C++11(O2)	134 Bytes	2024-8-15 10:59:18
AC	dongyantao	11ms	13.1 MiB	C++11(O2)	124 Bytes	2024-8-15 16:50:45