data declaration means a variable which contain data value and it can be declared as integer, float, character, double, boolean (data types).
example:
int r;
char name;
float g;
double k= 23.34;
The answer to the blank part of the statement is vision.
When you consume alcohol, your pupils would react slower; you would be less likely to contrast dark and light objects well; your eyes would twitch if your consumption is excessive; and you have dry eye, your symptoms would be exacerbated. This is one of the reasons why people who are drunk aren’t allowed to drive, since they cannot accurately perceive the things around them due to being impaired by alcohol.
Answer:
interface GUIComponent{
public void open();
public boolean close();
public void resize(int width, int height);
public void move(int x, int y);
}
Explanation:
Answer:
See Explanation
Explanation:
I'll assume the question is about the use of constants in QBasic because consonants do not have any special function or usage in QBasic.
In simple terms: In QBasic, constants are used to represent elements that do not change in value during program execution.
Take for instance, you intend to use 
in your program.
Its value is 
So, 3.142 will always be a constant in your program. One of the ways it can be used in a program is:
10 LET PI = 3.142
<em>The above represents a numeric constant. QBasic also have string constants.</em>
