【例34.3】 统计数字字符个数
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说明
输入一行字符，统计出其中数字字符的个数。
输入格式
一行字符串，总长度不超过 。
输出格式
输出为 行，输出字符串里面数字字符的个数。
样例
Peking University is set up at 1898.4（10.6）周日1530
- Status
- Done
- Problem
- 7
- Open Since
- 2024-10-6 0:00
- Deadline
- 2024-10-19 23:59
- Extension
- 24 hour(s)