C#: Get the first day of the current year and first of a year against a given date

C# Sharp DateTime : Exercise-46 with Solution

Write a program in C# Sharp to get the first day of a year against a date.

C# Sharp Code:

using System;

class dttimeex46
{
    static void Main()
    {
	int dt,mn,yr;
    Console.Write("\n\n Find  the first day of a year against a date :\n");
	Console.Write("---------------------------------------------------\n");	
	Console.WriteLine(" The First day of the current year is : {0} \n", FirstDayOfYear().ToString("dd/MM/yyyy"));
    Console.Write(" Input the Day : ");
    dt = Convert.ToInt32(Console.ReadLine());	
    Console.Write(" Input the Month : ");
    mn = Convert.ToInt32(Console.ReadLine());	
    Console.Write(" Input the Year : ");
    yr = Convert.ToInt32(Console.ReadLine());		
	DateTime d = new DateTime(yr, mn, dt);
	Console.WriteLine(" The formatted Date is : {0}",d.ToString("dd/MM/yyyy"));
    DateTime nd=FirstDayOfYear(d);
	Console.WriteLine(" The First day of the year {0} is : {1}\n", yr,nd.ToString("dd/MM/yyyy"));
    }
    static DateTime FirstDayOfYear()
    {
	return FirstDayOfYear(DateTime.Today);
    }
    static DateTime FirstDayOfYear(DateTime y)
    {
	return new DateTime(y.Year, 1, 1);
    }
}

Sample Output:

 Find  the first day of a year against a date :                                                               
---------------------------------------------------                                                           
 The First day of the current year is : 01/01/2017                                                            
   
 Input the Day : 12                                                                                           
 Input the Month : 06                                                                                          
 Input the Year : 2017                                                                                        
 The formatted Date is : 12/06/2017                                                                           
 The First day of the year 2017 is : 01/01/2017 

Flowchart :

C# Sharp Code Editor:

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