add all the odd numbers while loop | C# Online Compiler

add all the odd numbers while loop by SHAH ALAM

using System;
					
public class Program
{
	public static void Main()
	{
		int c,t,n=0;
		c=Convert.ToInt32(Console.ReadLine());
		t=Convert.ToInt32(Console.ReadLine());
		
			if(c<t)
			{
				if(c%2==0)
					c=c+1;
				do
				{
					n=n+c;
					c=c+2;
				}
				while(c<=t);
					Console.WriteLine(n);
			}
		else
		{
			if(c%2==0)
				c=c-1;
			do
			{
				n=n+c;
				c=c-2;
			}
			while(c>=t);
				Console.WriteLine(n);
		
		}
	}
}

	


#add all the evevn number s-b,b-s using do while loop:



using System;
					
public class Program
{
	public static void Main()
	{
		int c,t,n=0;
		c=Convert.ToInt32(Console.ReadLine());
		t=Convert.ToInt32(Console.ReadLine());
		
			if(c<t)
			{
				if(c%2==1)
					c=c+1;
				do
				{
					n=n+c;
					c=c+2;
				}
				while(c<=t);
					Console.WriteLine(n);
			}
		else
		{
			if(c%2==1)
				c=c-1;
			do
			{
				n=n+c;
				c=c-2;
			}
			while(c>=t);
				Console.WriteLine(n);
		
		}
	}
}

​x
 
using System;
                    
public class Program
{
    public static void Main()
    {
        int c,t,n=0;
        c=Convert.ToInt32(Console.ReadLine());
        t=Convert.ToInt32(Console.ReadLine());
        
            if(c<t)
            {
                if(c%2==0)
                    c=c+1;
                do
                {
                    n=n+c;
                    c=c+2;
                }
                while(c<=t);
                    Console.WriteLine(n);
            }
        else
        {
            if(c%2==0)
                c=c-1;
            do
            {
                n=n+c;
                c=c-2;
            }
            while(c>=t);
                Console.WriteLine(n);
        
        }
    }
}
​
    
​
​
#add all the evevn number s-b,b-s using do while loop:
​
​
​
using System;
                    
public class Program
{
    public static void Main()
    {
        int c,t,n=0;
        c=Convert.ToInt32(Console.ReadLine());
        t=Convert.ToInt32(Console.ReadLine());
        
            if(c<t)
            {
                if(c%2==1)
                    c=c+1;
                do
                {
                    n=n+c;
                    c=c+2;
                }
                while(c<=t);
                    Console.WriteLine(n);
            }
        else
        {
            if(c%2==1)
                c=c-1;
            do
            {
                n=n+c;
                c=c-2;
            }
            while(c>=t);
                Console.WriteLine(n);
        
        }
    }
}

Compilation error (line 42, col 2): Preprocessor directive expected
Compilation error (line 42, col 6): Single-line comment or end-of-line expected
Compilation error (line 46, col 1): A using clause must precede all other elements defined in the namespace except extern alias declarations
Compilation error (line 48, col 14): The namespace '<global namespace>' already contains a definition for 'Program'

Last Run:	5:27:05 pm
Compile:	0s
Execute:	0.16s
Memory:	0b
CPU:	0s

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