题解 | #判断字母#
判断字母
https://www.nowcoder.com/practice/44d2d63103664913bc243d3836b4f341
public class Program {
public static void Main() {
string line;
while ((line = System.Console.ReadLine ()) !=
null) { // 注意 while 处理多个 case
char alpha = char.Parse(line);
if ((alpha >= 'a' && alpha <= 'z') || (alpha >= 'A' && alpha <= 'Z'))
System.Console.WriteLine("YES");
else
System.Console.WriteLine("NO");
}
}
}
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