Data commit

Task/Loops-Increment-loop-index-within-loop-body/Visual-Basic-.NET/loops-increment-loop-index-within-loop-body.vb

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+Module LoopsIliwlb
+
+    Sub Main()
+        'Loops Increment loop index within loop body - 17/07/2018
+        Dim imax, i As Int32
+        Dim n As Int64
+        imax = 42
+        i = 0 : n = 42
+        While i < imax
+            If IsPrime(n) Then
+                i = i + 1
+                Console.WriteLine("i=" & RightX(i, 2) & " : " & RightX(Format(n, "#,##0"), 20))
+                n = n + n - 1
+            End If
+            n = n + 1
+        End While
+    End Sub
+
+    Function IsPrime(n As Int64)
+        Dim i As Int64
+        If n = 2 Or n = 3 Then
+            IsPrime = True
+        ElseIf (n Mod 2) = 0 Or (n Mod 3) = 0 Then
+            IsPrime = False
+        Else
+            i = 5
+            While i * i <= n
+                If (n Mod i) = 0 Or (n Mod (i + 2)) = 0 Then
+                    IsPrime = False
+                    Exit Function
+                End If
+                i = i + 6
+            End While
+            IsPrime = True
+        End If
+    End Function 'IsPrime
+
+    Function RightX(c, n)
+        RightX = Right(Space(n) & c, n)
+    End Function
+
+End Module