what is the value of the variable?

double dNum= 6.23

A. 6
B. 6.0
C. 6.23
D. 0.0
E. error: possible loss of precision

I'd say C

E might be considered, but the error in a double-precision value is out at the 14th significant figure, so I'd not consider that much of a loss of precision.

please help and explain

please help and explain

To determine the value of the variable `dNum`, you can look at the declaration `double dNum = 6.23`. In this case, `dNum` is a double variable, which means it can hold decimal values with a higher precision than other numeric types.

The value assigned to `dNum` is 6.23, as indicated by the initialization in the declaration. Therefore, the correct answer is C. 6.23.