用for语句打印一行星号（20个）

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	江宜轩	2ms	284 KiB	C++98	108 Bytes	2024-8-1 18:31:43
AC	丁郑涵	3ms	532 KiB	C++17	111 Bytes	2024-9-29 20:51:12
AC	肖君陶	3ms	284 KiB	C++98	126 Bytes	2024-12-16 19:51:35
AC	Chaser Of Light	3ms	1.4 MiB	C++98	104 Bytes	2024-5-11 22:18:31
AC	牛奶	3ms	528 KiB	C++98	143 Bytes	2024-5-30 21:29:03
AC	徐严羿泽	3ms	1 MiB	C++98	127 Bytes	2025-1-22 17:23:41