【例34.3】统计数字字符个数

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	李文茵	24ms	504 KiB	C++98	187 Bytes	2025-11-18 20:11:35
AC	朱子轩	25ms	764 KiB	C++98	232 Bytes	2025-9-20 14:27:50
AC	张若煊	26ms	504 KiB	C++98	180 Bytes	2025-10-27 20:13:11
AC	庞少卿	29ms	532 KiB	C++98	241 Bytes	2025-10-30 18:52:24