[RESOLVED] Extreme Novice Problems

Hey i am a extreme novice in Visual Basic and have done only basic things like Calculator and ETC. well i have a exame tomorow and want your help on following:-

--->what is MID function? what is its syntax? give eg:
--->what is INPUTBOX function? what is its syntax? give eg:
--->what are DATA TYPES? name each of them with syntax.
--->what is IF THEN ELSE? give syntax.
--->what are FUNCTIONS AND OPERATORS? name each of them with eg and syntax
--->what are LOOP STRUCTURES? (EXTREME NOVICE GUIDE FOR IT)...

can you guys help me?????


c ya
chao

regards,
readermaniax

don't have any VB book with you? these are really common stuff which you should know before starting to work on any language. so please buy a good book and start learning today.

Quote:

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what is MID function? what is its syntax? give eg:

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Mid or Mid$ are String function which extract a substring from the middle of the source string.

syntax = Mid(Sourcestring, Start, optional Length)
example:

VB Code:

Text = "123456789"
Print Mid$(text, 3, 4)       ' Displays "3456"

Quote:

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what is INPUTBOX function? what is its syntax? give eg:

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inputbox is also a String function which prompts user to enter string in a new Dialog box. it returns a String.

example:

VB Code:

Dim iStr As String
iStr = InputBox("Prompt Message", ["Title of the Box"],[])'actually its syntax includes many optional parameters

Quote:

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what is IF THEN ELSE? give syntax.

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this is a Decision Control Structure to implement a block of statements depending on certain condition(s).

syntax:

VB Code:

if [i]condition[/i] Then
[i]statements[/i]
End If
' another with Else
if [i]condition[/i] Then
[i]statements 1[/i]
Else
[i]statements 2[/i]

example:

VB Code:

Dim num as Integer: num = 5
if num = 10 Then
Print "Yes"
Else
Print "No"

Quote:

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what are LOOP STRUCTURES? (EXTREME NOVICE GUIDE FOR IT)

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Loop structures like For, While, Do-While, Do-Until etc involves repeating some portion of the program either a specified number of times or until a particular condition is specified.

Syntax & example:

VB Code:

'FOR Loop
dim i As integer
For i = 1 to 10
  Print i
Next i
 
'While loop
i = 0
While i < 10
   print i
   i = i +1
Wend
 
'Do-while
i=0
Do
  Print i
  i = i + 1
Loop While i < 10

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what are FUNCTIONS AND OPERATORS? name each of them with eg and syntax

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sounds confusing. what kind of functions?? functions can be native (like Mid in your example) or may be programmer-made.

and you cannot name all native functions of VB, its a huge list and you need an extremely good book to take a look at all of them.

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what are DATA TYPES? name each of them with syntax.

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Again a very big question, and will need a good book. just for getting started, there are few Data types (from my head), namely:

Code:

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Integer    - holding integer values from -32768 to +32767
Long        - holding integer values from -2147483648 to +2147483647
Single      - holding real values from -3.4 E38 to +3.4 E38
Double      - holding real values from -1.7 E308 to +1.7 E308
String      - Holding all keyboard stuff within " " (quoattion marks)
Currency    - can hold vary large data (numeric)(i have no idea).
Variant    - this can hold any type of data and a large amount of data

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Hope it helped you a bit.

Harsh Gupta

Moved to General Developer

[b]thanx Harsh For The Fast Responese........i Really Thank You...

who's VISHAL?? :/

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Originally Posted by Harsh Gupta

who's VISHAL?? :/

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:lol: Your evil twin perhaps? :D

Quote:

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Originally Posted by Hack

:lol: Your evil twin perhaps? :D

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maybe ;)