C++-字符与字符数组-接收一个英文字符，判断该字符是大写或小写，若是大写输出该字符的小写形式，反之亦然
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Background
Description
接收一个英文字符，判断该字符是大写或小写，若是大写输出该字符的小写形式，反之亦然。
Format
Input
Output
Samples
A
a
t
T
Limitation
字符与字符数组
- Status
- Done
- Rule
- ACM/ICPC
- Problem
- 7
- Start at
- 2024-4-30 0:00
- End at
- 2024-5-12 12:00
- Duration
- 300 hour(s)
- Host
-
吴泽宏 (wuzehong)
- Partic.
- 4