3.16 - If, symbols

Objetive
Create a program to ask the user for a symbol and answer if is an uppercase vowel, a lowercase vowel, a digit or any other symbol, using "if".

Solution
using System;
public class exercise065 {
    public static void Main() {
        char symbol;
        
        Console.Write("insert anything: ");
        symbol = Convert.ToChar(Console.ReadLine());
        
        if(symbol>='0' && symbol <='9')
            Console.WriteLine("it's a number");
        
        else if ((symbol=='a') || (symbol=='e') || (symbol=='i')
                || (symbol=='o') || (symbol=='u'))
            Console.WriteLine("it's a lowercase vowel");
    
        else if ((symbol=='A') || (symbol=='E') || (symbol=='I')
                || (symbol=='O') || (symbol=='U'))
            Console.WriteLine("it's a upercase vowel");
        
        else
            Console.WriteLine("it's a symbol");
    }
}

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