Course Outline VB2010 Slot Machine
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ST. JOHN TECHNOLOGICAL COLLEGE OF THE PHILIPPINES 29 Jewel St. Forest Hills Subd., Brgy. Gulod, Novaliches, Quezon City Engineering Department AY 2012-2013 SUMMER mm_sjtcp2011@yc T3AY12-13, SM_Page 1 Visual Basic 2010 Objectives : To be able to learn 1. how to create a lucky seven slot machine 2. how to create a graphical slot machine. A Simple Lucky Seven Slot Machine Problem: Create a program that generates nine numbers that changes randomly according to the Timer’s interval and displays them on the three labels. The process stops after a certain period. The program will then examine the final three numbers. If the three numbers are found to be seven, a message will pop up to tell the player that he has won the jackpot, oth erwise th e message will display the text “ No luck, try again”. A lucky seven slot machine allows a player to win the jackpot if three rows of 7 appear when the spin stopped. In this program, we insert three labels, 2 buttons and a timer into the form. And set the properties of the controls as follows: Control Property Label1, Label2 and Label3 Backcolor: Navy Blue Forecolor: Yellow Font: Microsoft Sans Serif, Size 14, Bold Button1 Name : BtnSpin Text : SPIN Font: Microsoft Sans Serif, Size 14, Bold Button2 Name : BtnSpin Text : EXIT Font: Microsoft Sans Serif, Size 14, Bold Rnd() function – use to generate random numbers Syntax: from 1 to 9 Int(1 + Rnd( ) * 9) Declare three variables n1, n2, and n3 as integers so that the randomly generated numbers will be assigned to them and to be displayed on three labels. Declare a variable m to control the duration of the spin. The value of m increases by 10 after each timer’s interval and the process stops after the value of m exceeds 1000. Codes: Public Class Form1 Dim m, n1, n2, n3 As Integer Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load End Sub Private Sub Timer1_Tick( ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick m = m + 10 If m < 1000 Then n1 = Int(1 + Rnd() * 9) Label1.Text = n1 n2 = Int(1 + Rnd() * 9) Label2.Text = n2 n3 = Int(1 + Rnd() * 9) Label3.Text = n3
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