operators

Using the Microsoft compiler, the result of the expression is 1.

If both operands of the && operator are non-zero (as here), then the result is 1.

However, if one (or both) of the operands is 0, then the result is 0.
 

sorry that expression in c language what is the result how it evaluated.

In C# that expression is invalid.

You can't apply the && operator to int operands.

Do you perhaps mean C or C++?

In those languages, the  expression would have a non-zero value (typically 1) which corresponds to the bool value, true.