#4144. Ｃ++-五缘二四五年级_信息奥赛基础校队-选择题:如果 a 为 char 类型的变量
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ID: 4144
Type: Default
1000ms
256MiB
Tried: 2
Accepted: 1
Difficulty: 10
Uploaded By:
池立颖 (chiliying)
Ｃ++-五缘二四五年级_信息奥赛基础校队-选择题:如果 a 为 char 类型的变量
Background
Description
选择题：如果 a 为 char 类型的变量，下列哪个表达式可以正确判断“a 是数字”( )？
A. '0' <= a && a <= '9'
B. '1' <= a && a <= '0'
C. '0' <= a <= '9'
D. '1' <= a <= '0'
Format
Input
Output
Samples
Limitation
1s, 1024KiB for each test case.