Homework Sourse36A I Do Declare Write a half page comparing explicit and im
3-6-A I Do Declare
Write a half page comparing explicit and implicit declaration of data variables and data types. Compare advantages and disadvantages of each approach.
Solution
eg2. Explicit conversion of data type : var x = (int) a;
We are telling the compiler to convert variable a into x,
| Implicit Declaration | Explicit Declaration |
| It is done by the compiler. | It is done by the user/programmer. |
| eg1. Default constructor is declared implicitly for every class not having any constructor defined by the user. | eg1. We explicitly declare a parameterised constructor in java. |
| eg2. Implicit conversion of data type : int a = 7; Implicit conversion done automatically by the compiler : float x=a; | eg2. Explicit conversion of data type : var x = (int) a; We are telling the compiler to convert variable a into x, |
| Advantage: Easier Naming convention. Binding of variable to a type based on variable name is done by the compiler. | Advantage: Dynamic binding of variable provides more programming flexibility. |
| Disadvantage : They prevent compiler to detect any typographical or programmer error. | Disadvantage : It allows any variable to be assigned value of any type. |
