C# program to compare two dates

C# program to compare two dates:

This program will show you how to compare two dates in C#. We will read the year, month and day as input from the user for both dates and compare them both.

C# program:

Below is the complete C# program:

using System;

public class Program
{
	public static void Main()
	{
		int year1, month1, date1, year2, month2, date2;
        
        Console.WriteLine("Enter data for the first date : ");
		Console.Write("Year : ");
		year1 = Convert.ToInt32(Console.ReadLine());
		
		Console.Write("Month : ");
		month1 = Convert.ToInt32(Console.ReadLine());
		
		Console.Write("Date : ");
		date1 = Convert.ToInt32(Console.ReadLine());
		
		Console.WriteLine("Enter data for the second date : ");
		Console.Write("Year : ");
		year2 = Convert.ToInt32(Console.ReadLine());
		
		Console.Write("Month : ");
		month2 = Convert.ToInt32(Console.ReadLine());
		
		Console.Write("Date : ");
		date2 = Convert.ToInt32(Console.ReadLine());
		
		DateTime dateTime1 = new DateTime(year1, month1, date1);
		DateTime dateTime2 = new DateTime(year2, month2, date2);
		
		if(dateTime1 < dateTime2){
			Console.WriteLine("Time {0} is before {1}", dateTime1, dateTime2);
		}else{
			Console.WriteLine("Time {0} is after {1}", dateTime1, dateTime2);
		}
	}
}

Here,

year1, month1, date1, year2, month2, date2 are integer variables to hold the year, month and date data for both dates.
It takes the inputs from the user and stored in the variables.
Using the user input values, it created two DateTime variables dateTime1 and dateTime2.
The last if-else block compares both dateTime1 and dateTime2 and prints one message which one comes before.

Sample output:

It will give output as like below:

Enter data for the first date : 
Year : 2020
Month : 11
Date : 11
Enter data for the second date : 
Year : 2020
Month : 12
Date : 12
Time 11/11/2020 12:00:00 AM is before 12/12/2020 12:00:00 AM

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