Visual Basic Programming

Private is a keyword that tells visual basic what the access level of the variable or procedure it is declaring will be within your application, and as such what code has permission to read it and write to it (or call it).

You would use private on variables and procedures you wish to expose only to the class in which they are actually in, the ability to correctly define public, private and protected (etc.) access levels for code is a primary principle of object oriented programming.

When you declare a variable you can do any of the following, for this example, the following three variables are all declared on one form (Form1):

Dim intVariable1 As Integer

Public intVariable2 As Integer

Private intVariable3 As Integer

All three are integer variables, the difference comes in what can and cannot access them. Dim and Private are equivalent, one and the same, they can only be accessed and manipulated within the form itself.

However, intVariable2 is declared as public, which means that for example, if we created another form (Form2) with the following code behind it declaring a new copy of form 1:

Private oForm1 As New Form1

oForm1.intVariable2 = 87

We can change and access the second variable from another form, however since the other two variables are declared Dim and Private they cannot be accessed from any other location than within form1 itself.

Hope this clarifies it a bit for you.

1.Click on Run menu->Start option.

2.Click on Start button>on the Toolbar.

3.The Output window appears.

Inheritance in Java refers to the feature wherein the code/functionality of one class can be used in another class that extends this class. Example:

public class Parent {

...

..

}

public class Child extends Parent {

...

..

.

}

Here the class Child extends the class Parent and hence the methods of Parent are available for Child to use. This way we are re-using the code in the parent class in the child class instead of re-writing the whole thing again.

An annotated visual display is a combination of visuals and summaries of observations. This information is then used to answer a hypothesis, a question to test with the observation you have made. ... The annotated visual display is a large poster.

You program programs like notepad, paint and such. But for sure you can program/create any type of software/application that you want, as long as you know the code. There are many sample/example on the internet. You can search at Google by the keyword 'visual basic sample' or you can go to http://www.planet-source-code.com, the largest programming language/code sample database on the internet.

Maybe it does not exist just for hotel management. However, you may want to take a look at the more widespread general DFD design tools such as the free Dia (http://live.gnome.org/Dia) or the commercial Visio (http://en.wikipedia.org/wiki/Microsoft_Visio).

It isn't. Visual Basic is a programming language. Visual Studio is the IDE (integrated development environment). The Visual Studio IDE can be used to write programs in other languages besides Visual Basic, including Visual C++, Visual C#, Visual F, JavaScript and Python. The IDE provides all the tools you need to write programs in any of these languages but can be customised to support others. The languages available depend upon which languages you have installed or added to the IDE.

Yes, Visual basic uses Objects. I.E. buttons, options buttons, forms, text boxes, these are all objects in VB. VB also allows the creation and use of COM classes.

Visual basic is partially OOP as it does not support implementation inheritance, which is usually a feature of an object-oriented language.

A "bug" is another word for an error. This usually arises if their is a problem with the code or a code's result.

It depends on what you mean by 'line structure'.

Prep work: add 3 textboxes and 4 buttons

Button1 = Add

Button2 = Subtract

Button3 = Multiply

Button4 = Divide

Make sure to keep a textbox for the answer (I'll use one called, "TextBox3")

For Button 1:

TextBox3.Text = Val(TextBox1.Text) + Val(TextBox2.text)

'This takes text1's value and adds text2's value to it

For Button 2:

TextBox3.Text = Val(TextBox1.Text) - Val(TextBox2.Text)

'same as button one but subtract

For Button 3:

TextBox3.Text = Val(TextBox1.Text) * Val(TextBox2.Text)

For Button 4:

TextBox3.Text = Val(TextBox1.Text) / Val(TextBox2.Text)

I don't now visual basic, but to determine whether or not a number is even or odd, divide it by two twice, and round once. If the rounded result is equal to the non-rounded result, then the original number is even:

input n

if (n/2.0) == int(n/2.0)

print "the number is even"

Visual Nature Studio was created on 2001-09-07.

If you are referring to the searching and sorting of strings, there are 2 main methods that Visual Basic uses most. If you want to search for a phrase in a string, you would probably use the InStr method, which would give you an integer which would indicate the place where the phrase was found. It might look something like this:

Dim InputString as String

Dim StringToFind as String = "Whatever text you want to find"

Dim PositionInteger as Integer

PositionInteger = InStr(InputString, StringToFind)

If you wanted to sort the string, you could do it with the substring method using the split point you found with the previous code. To do that, you would make a variable that would contain the latter half of your string, and use the subtring method to extract it from the whold string. To do that, you must type "Substring" and in parenthasis, give it a starting position, and an ending position. If you want all the characters from the phrase to the end of the sting, you do not need to put in an end point. The starting point for this example will be the position of the start of the search phrase, plus thirty (since you want to start after the end of the phrase, which is thirty characters long). Your code might look like this:

Dim NewString as String

NewString = Substring(PositionInteger + 30)

This would make the variable "NewString" contain all the characters following the search phrase.