How to use the do while loop statement in VB?

2 years ago
Noah Thompson
1 minute

In VB, the Do While loop statement is used to repeat a set of statements while a specified condition is true. Here is an example of using the Do While loop:

Do While condition
    ' 执行的语句
Loop

In this grammar structure, the condition is the loop’s condition. As long as the condition is true, the statements inside the loop will be repeated. The statements within the loop can be any valid VB code.

Here is a specific example demonstrating how to use a Do While loop to calculate the sum from 1 to 10:

Dim i As Integer = 1
Dim sum As Integer = 0

Do While i <= 10
    sum += i
    i += 1
Loop

Console.WriteLine("Sum: " & sum)

In this example, a variable i and a variable sum are first defined. Then, a Do While loop is used to repeat the following steps: adding i to sum and then incrementing i. The loop condition i <= 10 ensures that the loop will execute 10 times, adding up the numbers from 1 to 10. Finally, the result is printed using Console.WriteLine.

Through this example, you can see how to use a Do While loop to repeatedly execute a set of statements until a specified condition is no longer met.

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