In Visual Basic, which of the following is used for coding single-alternative and dual-alternative selection structures?
A. Switch-Case block
B. If...Then...Else statement
C. function overloading
D. Recursion
Answer: Option B
Solution(By Examveda Team)
InVisual Basic
, the If...Then...Else
statement is used for coding single-alternative and dual-alternative selection structures. Single-alternative selection: In this structure, a decision is made between two options - one when a certain condition is true, and potentially no action when the condition is false.
Dual-alternative selection: Here, the program chooses between two possible actions based on whether a given condition is true or false.
The
If...Then...Else
statement is structured as follows: If condition Then
' Code to be executed if the condition is true
Else
' Code to be executed if the condition is false (optional)
End If
The other options listed are not directly related to selection structures in the same way:
Option A,
Switch-Case block
, is used for handling multiple possible values of an expression, not just single or dual alternatives. Option C,
function overloading
, is a concept related to defining multiple functions with the same name but different parameter lists. It's not used for creating selection structures. Option D,
Recursion
, is a technique where a function calls itself. While recursion can be used in coding solutions, it's not specifically tied to single or dual-alternative selection structures. Therefore, the correct option is Option B: If...Then...Else statement.
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