Type of conditional expression cannot be determined because there is no implicit conv

[thushan]

what is that mean its come when i do terrary operator ith conso;.writelin e operation

[Christopher Nigro]

No one caqn help you unless you show your code. Otherwise, it means exactly what it says.

[thushan]

static void Main(string[] args)
        {
 
            int n = 1;
            int m = n < 10 ? Console.WriteLine("1") : Console.WriteLine("2"); 
 
            Console.WriteLine("m={0}", m);
          Console.ReadLine();
 
 
        }
 

this is my code im beginer to c#

[GaryTexmo]

Oh, it's 'cause you're trying to assign an integer with the return value of a Console.WriteLi ne(...) call, which happens to be void.

That little ?: thing is a replacement for if/else.

(boolean test) ? (true statements) : (false statements)

... is exactly equivalent to ...

if (boolean test)
  (true statements)
else
  (false statements)

So what your statements come out to be is this...

int n  = 1;
int m;
if (n < 10)
  m = Console.WriteLine("1");
else
  m = Console.WriteLine("2");
 
...

In all cases, you'll need to ditch the Console.WriteLi ne if you want to assign a value to m. If you want m to be an integer, then just have..

int m = n < 10 ? 1 : 2;

If you want the Console.WriteLi ne part, skip assignment and write the full if/else statement.

Hope that helps.

[a1ashiish]

Thanks Gary, you made the things very easy for beginners. I also want add some text on ternary operations - if you follow the MSDN for ternary operation you will find that "either the type of first expression & second expression must be same, or an implicit conversion must exist from one type to other".
It means both the expressions in ternary operation must return same type.