23 lines
544 B
C#
23 lines
544 B
C#
using System;
|
|
namespace ConsoleApp1
|
|
{
|
|
class HelloWorld
|
|
{
|
|
static void Main()
|
|
{
|
|
char ch=Console.ReadKey();
|
|
if (Char.ToUpper(ch)<= 'A' && Char.ToUpper(ch)<='Z')
|
|
{
|
|
if (ch >= 'A' && ch <= 'Z')
|
|
{
|
|
Console.WriteLine("{0}是大写字母", ch);
|
|
}
|
|
else
|
|
{
|
|
Console.WriteLine("{0}是小写字母", ch);
|
|
}
|
|
}
|
|
else if ()
|
|
}
|
|
}
|
|
} |