C# Online Compiler | .NET Fiddle

<no name> by Anonymous

using System;
					
public class Program
{
	public static void Main()
	{
		int d,m,y;
		Console.WriteLine("day/month/year:");
		d=int.Parse(Console.ReadLine());
	    m=int.Parse(Console.ReadLine());
	    y=int.Parse(Console.ReadLine());
	
		if (((y>0) && 
		(m<=12 && m>0) &&
		(d>0 && d<=31)))
		Console.WriteLine();{
		if ((((d>0&&d<=31&&(m==1||m==2 ||m==3 ||m==5 ||m==7|| m==8||m==10 ||m==12))||
		(d>0&&d<=30&&(m==4||m==6 ||m==9 ||m==11))||
		(d>0&&d<=28&& m==2)||
	    ( d ==29 && m==2&&y%4==0))))
		
		{Console.WriteLine(d+"/"+m+"/"+y); 
		Console.WriteLine("Valid");}
		else
		{Console.WriteLine(d+"/"+m+"/"+y);
	    Console.WriteLine("Wrong");}}
	}
}

 
using System;
                    
public class Program
{
    public static void Main()
    {
        int d,m,y;
        Console.WriteLine("day/month/year:");
        d=int.Parse(Console.ReadLine());
        m=int.Parse(Console.ReadLine());
        y=int.Parse(Console.ReadLine());
    
        if (((y>0) && 
        (m<=12 && m>0) &&
        (d>0 && d<=31)))
        Console.WriteLine();{
        if ((((d>0&&d<=31&&(m==1||m==2 ||m==3 ||m==5 ||m==7|| m==8||m==10 ||m==12))||
        (d>0&&d<=30&&(m==4||m==6 ||m==9 ||m==11))||
        (d>0&&d<=28&& m==2)||
        ( d ==29 && m==2&&y%4==0))))
        
        {Console.WriteLine(d+"/"+m+"/"+y); 
        Console.WriteLine("Valid");}
        else
        {Console.WriteLine(d+"/"+m+"/"+y);
        Console.WriteLine("Wrong");}}
    }
}

     Warning:
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运行成功,2025-03-08T10:49:25.0060674+00:00

Cached Result
Last Run:	6:49:24 pm
Compile:	0.307s
Execute:	0.12s
Memory:	8.49Mb
CPU:	0.427s

View IL Code