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Visual Basic Control Statements And Functions : MCQs & PYQs with Explanation

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Visual Basic Control Statements And Functions : Solved MCQs and PYQs

This section contains carefully selected MCQs and Previous Year Questions with explanations to help students understand concepts and prepare effectively for examinations, interviews, and competitive tests.

Topics Covered
Conditional Statements If-Then If-Then-Else Select Case Nested Conditions For Loop For Each Loop While Loop Do While Do Until Loop Control Exit Statements Procedures Sub Procedures Functions Function Arguments Parameters ByVal And ByRef Return Values Recursion Arrays Multidimensional Arrays String Handling String Functions

Q: 1In Visual Basic, what will be the result of the following code?
newValue = CDbl(oldValue)

A

Conversion of data type to Date

B

Conversion of data type to Boolean

C

Conversion of data type to Double

D

Conversion of data type to String

Option C

In Visual Basic, the CDbl() function is used to convert a value to the Double data type. Therefore, in the statement newValue = CDbl(oldValue), the value stored in oldValue is converted into a Double value and then assigned to newValue.
E.g.:
Dim oldValue As String = "25.50"
Dim newValue As Double
newValue = CDbl(oldValue)
Console.WriteLine(newValue)

FunctionDescription
CInt()Converts a value to Integer.
CDbl()Converts a value to Double.
CSng()Converts a value to Single.
CDec()Converts a value to Decimal.
CLng()Converts a value to Long.
CStr()Converts a value to String.
CBool()Converts a value to Boolean.
CDate()Converts a value to Date.
CByte()Converts a value to Byte.
CChar()Converts a value to Char.
CObj()Converts a value to Object.

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