עזרה במדעי המחשבב סי שארפ

using system;

class charactertypechecker
{
static void main()
{
console.write("enter a character: ");
char inputchar = console.readkey().keychar;
console.writeline(); // move to the next line after input

if (char.isletter(inputchar))
{
if (char.isupper(inputchar))
{
console.writeline("the character is an uppercase english letter.");
}
else
{
console.writeline("the character is a lowercase english letter.");
}
}
else if (char.isdigit(inputchar))
{
console.writeline("the character is a number.");
}
else
{
console.writeline("the character is a symbol or special character.");
}
}
}