1 00:00:01,680 --> 00:00:06,600 OK, this video, we want to start to work on this ad correct function, and this is the function that's 2 00:00:06,600 --> 00:00:11,760 going to get called, as you know, when we press the button and it will calculate whether or not the 3 00:00:11,760 --> 00:00:13,800 answer we typed into the box is correct or not. 4 00:00:13,830 --> 00:00:18,690 So the first thing we really need is to figure out what the correct answer actually is. 5 00:00:18,690 --> 00:00:18,990 Right. 6 00:00:19,350 --> 00:00:24,300 So let's let's go call you late. 7 00:00:24,870 --> 00:00:27,030 The actual answer. 8 00:00:27,780 --> 00:00:29,640 And that's going to be let's create a variable. 9 00:00:29,640 --> 00:00:30,780 Let's just call it correct. 10 00:00:31,140 --> 00:00:35,550 And that's going to be number one, plus number two. 11 00:00:35,880 --> 00:00:42,060 And that's just this number one in this number two, which we got from the button by passing in num 12 00:00:42,060 --> 00:00:46,080 underscore one douget and num underscore to get. 13 00:00:46,320 --> 00:00:51,690 And then when they come to this function we turn them into number one, number two, without an underscore 14 00:00:51,690 --> 00:00:55,560 just so that we can keep track of them better, we could probably call them number one and number two. 15 00:00:55,560 --> 00:00:59,730 But we want to fiddle with num num num num to underscore later on. 16 00:01:00,210 --> 00:01:02,360 So we'll just do it like this. 17 00:01:02,490 --> 00:01:04,580 So, OK, this is the actual correct answer. 18 00:01:04,860 --> 00:01:11,590 Now we need to create some logic to determine whether or not our answer is the correct answer. 19 00:01:12,270 --> 00:01:13,920 So let's go if. 20 00:01:15,000 --> 00:01:23,100 Add, underscore, answer doget, and we actually need to wrap this in an integer function to make sure 21 00:01:23,100 --> 00:01:26,490 that it's an integer and this ad answer, where am I getting that? 22 00:01:26,490 --> 00:01:30,240 That is our add enter entry box. 23 00:01:30,450 --> 00:01:32,370 This is whatever they typed into that box. 24 00:01:32,370 --> 00:01:32,650 Right. 25 00:01:32,970 --> 00:01:38,720 So if add in add answer doget equals double equal to sign. 26 00:01:38,730 --> 00:01:39,790 That's how we do a comparison. 27 00:01:39,810 --> 00:01:40,320 Operator. 28 00:01:41,550 --> 00:01:51,000 Correct, then let's just say correct for now, we'll fix this in a second or else incorrect. 29 00:01:51,340 --> 00:01:51,690 Right. 30 00:01:52,400 --> 00:01:55,650 OK, so now what do we want to put here in correct and incorrect? 31 00:01:55,680 --> 00:02:02,820 Well, we want to slap something up on the screen, at least for now, that says correct or incorrect. 32 00:02:02,820 --> 00:02:03,090 Right. 33 00:02:03,090 --> 00:02:14,250 So let's create a variable and let's do it up here and let's call this correct and incorrect message. 34 00:02:14,560 --> 00:02:14,970 Right. 35 00:02:15,330 --> 00:02:27,710 So I'm going to call this output answer, underscore, correct and output underscore answer incorrect. 36 00:02:27,720 --> 00:02:31,890 So we're going to create two variables, and I want to create these as string variables. 37 00:02:32,100 --> 00:02:36,450 So let's go string var and we can just copy this. 38 00:02:38,110 --> 00:02:41,970 OK, so their actual string of errors but now we want to set them. 39 00:02:41,980 --> 00:02:46,530 So let's go dot set. 40 00:02:47,830 --> 00:02:52,900 And then, boom, that set off this one needs to be incorrect. 41 00:02:53,660 --> 00:03:00,820 OK, so what do we want to set these as well for now, let's just say correct. 42 00:03:03,430 --> 00:03:11,290 And incorrect and, well, we'll snazzy this up a little bit in a bit, but for now we just want correct 43 00:03:11,290 --> 00:03:13,120 and incorrect and what do we want to do? 44 00:03:13,210 --> 00:03:18,250 Well, we want to put these in a label and I'll put it on the screen. 45 00:03:18,250 --> 00:03:20,230 So let's call this ad. 46 00:03:20,230 --> 00:03:21,820 Underscore, correct. 47 00:03:22,240 --> 00:03:23,470 Underscore a label. 48 00:03:26,940 --> 00:03:36,030 What I want to do is create this label outside of this function, and I'll show you why in just a second 49 00:03:36,450 --> 00:03:38,100 if we come down to our ad function. 50 00:03:38,110 --> 00:03:40,740 So here we have our answer box or whatever answer button. 51 00:03:41,100 --> 00:03:49,140 Here we have let's put another comment and say correct or incorrect message. 52 00:03:49,980 --> 00:03:51,270 And there it is. 53 00:03:51,280 --> 00:03:54,000 And actually, I want to make this global so it can be used all over the place. 54 00:03:54,030 --> 00:03:55,140 So let's call global. 55 00:03:56,310 --> 00:04:03,390 And now let's create this, it's a label, and we want this to be in our ad frame and we want the text 56 00:04:03,390 --> 00:04:05,190 to equal for now. 57 00:04:05,190 --> 00:04:09,990 Let's put into your answer above. 58 00:04:11,540 --> 00:04:14,540 Right, and then let's add correct. 59 00:04:15,600 --> 00:04:24,030 Underscore label, dot pack, and let's give this iPad pad Y of, I don't know, five, OK, let's just 60 00:04:24,030 --> 00:04:25,110 see here. 61 00:04:25,120 --> 00:04:26,370 That looks right. 62 00:04:27,440 --> 00:04:36,020 Now, if we come up here, we can update that and a bunch of videos ago that show you how to use pack, 63 00:04:36,020 --> 00:04:38,900 forget and forget, that's a way to hide things. 64 00:04:39,080 --> 00:04:43,790 You can also just update them using their configuration settings. 65 00:04:44,000 --> 00:04:46,880 And I think that's probably the better way to do it in this case. 66 00:04:47,040 --> 00:04:51,740 I didn't actually show you how to do that earlier, but I'll show you now we can just call ad correct 67 00:04:51,740 --> 00:04:57,350 label dot config and set the text equal to whatever we want. 68 00:04:57,380 --> 00:04:58,490 Well, what do we want to sell it to? 69 00:04:58,490 --> 00:05:00,980 Let's set it to this. 70 00:05:04,030 --> 00:05:08,410 But we want to get it, so get and we could do the same thing down here. 71 00:05:09,570 --> 00:05:17,130 But instead of output answer correct, we want to output answer incorrect so we can just paste that. 72 00:05:17,160 --> 00:05:20,850 OK, so let's save this and see if that worked. 73 00:05:20,890 --> 00:05:21,750 Let's run this guy. 74 00:05:22,330 --> 00:05:26,390 We got math flash cards and now we have this little message down here. 75 00:05:26,400 --> 00:05:29,420 This is your answer above so we can go four plus nine. 76 00:05:29,430 --> 00:05:32,430 That's 13 and nothing changed. 77 00:05:32,440 --> 00:05:36,330 So we got an error somewhere and answer is not defined. 78 00:05:36,370 --> 00:05:38,030 What did I forget to do? 79 00:05:38,580 --> 00:05:41,960 Line 20 and line forty nine. 80 00:05:42,780 --> 00:05:46,170 OK, so add answer dot get. 81 00:05:47,830 --> 00:05:50,720 Let's see, uh, here's our ad answer. 82 00:05:50,740 --> 00:05:57,760 This is the entry box we need to make this global so that it could be used anywhere in the programs. 83 00:05:57,790 --> 00:05:58,720 OK, let's save this. 84 00:05:58,720 --> 00:05:59,610 That should do the trick. 85 00:05:59,620 --> 00:06:02,730 Hopefully it's clear the screen and run it. 86 00:06:03,070 --> 00:06:05,350 OK, so add a zero plus nine. 87 00:06:05,350 --> 00:06:06,550 Alesco nine. 88 00:06:07,790 --> 00:06:11,050 Correct, and you see it updates right there for us. 89 00:06:14,600 --> 00:06:20,770 If we run this again, it's no good, let's try this again and let's do it for incorrect to make sure 90 00:06:20,770 --> 00:06:21,430 that worked. 91 00:06:22,330 --> 00:06:24,400 Seven plus five is forty three. 92 00:06:24,910 --> 00:06:25,600 Incorrect. 93 00:06:25,600 --> 00:06:27,460 So the logic now works. 94 00:06:27,580 --> 00:06:29,770 Our little message outputs correctly. 95 00:06:29,890 --> 00:06:31,090 This is not a great message. 96 00:06:31,090 --> 00:06:31,540 Correct. 97 00:06:31,540 --> 00:06:32,080 Incorrect. 98 00:06:32,200 --> 00:06:33,160 That doesn't tell us anything. 99 00:06:33,160 --> 00:06:34,390 We want to be more specific. 100 00:06:34,390 --> 00:06:36,180 Like incorrect. 101 00:06:36,190 --> 00:06:39,690 Seven plus five is twelve not forty three you idiot. 102 00:06:39,870 --> 00:06:45,400 Know some little message like that so that we can sort of keep track of what our answer was and what 103 00:06:45,400 --> 00:06:48,250 the question was, because this is going to update too. 104 00:06:48,280 --> 00:06:50,980 So we'll start to look at that in the next video. 105 00:06:51,190 --> 00:06:56,260 And we also need to do some more work here so that when we click this button, we get new numbers here 106 00:06:56,260 --> 00:06:58,330 and this gets deleted. 107 00:06:58,540 --> 00:07:00,640 So we'll start to look at those things in the next video.