Why the compiler decide 2.3 is double and not decimal?

Question

Why does the compiler decide that 2.3 is double so this code won\'t compile:

decimal x;
x = 2.3; // Compilation error - can not convert double to decimal.
x          


        

Answer 1

2.3 is double. That is the language rules; any numeric literal with a decimal point in it is a double, unless it has a F suffix (float), or M suffix (decimal):

x = 2.3F; // fine

The compiler helpfully tells me this, too:

Literal of type double cannot be implicitly converted to type 'float'; use an 'F' suffix to create a literal of this type