1 00:00:01,100 --> 00:00:02,450 Hey, guys, what's up? 2 00:00:02,870 --> 00:00:08,270 So today we are going to cover a new topic called Friends Variables. 3 00:00:10,140 --> 00:00:11,570 Defense, reliables. 4 00:00:13,540 --> 00:00:17,260 So when we write and a question. 5 00:00:17,840 --> 00:00:18,640 So what will happen? 6 00:00:18,670 --> 00:00:22,200 I will get a box of size for bites. 7 00:00:22,840 --> 00:00:26,210 Its name is A and it's Ray Lewis then. 8 00:00:27,320 --> 00:00:31,570 So when I date and X equals A, what will happen? 9 00:00:32,050 --> 00:00:34,890 I will get a box of size four bytes. 10 00:00:35,230 --> 00:00:42,190 The name of this Boggs's X and the value is then basically copy the video fee and do X. 11 00:00:43,470 --> 00:00:43,770 OK. 12 00:00:44,460 --> 00:00:50,940 So what will that fence, what it will it will do then at eight and equals 10 again. 13 00:00:51,540 --> 00:00:53,820 I will get Eyeborgs. 14 00:00:54,690 --> 00:00:56,290 The name of this box is a. 15 00:00:56,370 --> 00:00:57,660 And the value is ten. 16 00:00:59,130 --> 00:01:04,360 Now I will write and ampersand X equals eight. 17 00:01:05,340 --> 00:01:06,290 So what will happen? 18 00:01:09,700 --> 00:01:16,510 X. So basically the name of this box is X also so. 19 00:01:17,500 --> 00:01:20,200 So this is called a reference variable. 20 00:01:22,000 --> 00:01:23,320 So we're defense variable. 21 00:01:25,030 --> 00:01:27,430 Does is it makes nickname. 22 00:01:29,510 --> 00:01:29,800 OK. 23 00:01:30,370 --> 00:01:33,060 So the original aim of this box was a.. 24 00:01:33,400 --> 00:01:35,300 Now it's a nickname is X. 25 00:01:36,430 --> 00:01:36,670 OK. 26 00:01:36,760 --> 00:01:39,190 So X will not be allocated any new memory. 27 00:01:39,730 --> 00:01:40,390 This is wrong. 28 00:01:40,660 --> 00:01:42,340 Excellent point towards this. 29 00:01:43,180 --> 00:01:43,460 OK. 30 00:01:43,720 --> 00:01:47,820 So this box now has two names, E and X. 31 00:01:49,240 --> 00:01:52,720 For example, if I had eight X plus plus. 32 00:01:53,260 --> 00:01:56,480 And now if I write and print the value of a.. 33 00:01:56,920 --> 00:01:58,210 So what would be my output. 34 00:01:58,330 --> 00:01:59,690 Mild but will be eleven. 35 00:02:00,280 --> 00:02:00,560 Why. 36 00:02:01,450 --> 00:02:03,580 Because this value will be changed. 37 00:02:03,670 --> 00:02:04,750 It will become eleven. 38 00:02:06,670 --> 00:02:06,940 OK. 39 00:02:07,480 --> 00:02:14,260 Similarly, you can also do you can write and you can make as many as an eventually label as you want. 40 00:02:14,860 --> 00:02:18,730 So and ampersand, why is it so now? 41 00:02:18,730 --> 00:02:24,700 This box containing eleven has two names, E, X and Y. 42 00:02:25,480 --> 00:02:27,190 So if I do Y plasmas. 43 00:02:28,090 --> 00:02:34,650 And now if I try and print the value of a wider loom output, Marbut will be well. 44 00:02:36,400 --> 00:02:37,930 So this value is changed. 45 00:02:38,020 --> 00:02:38,860 This is Gwen. 46 00:02:39,910 --> 00:02:44,050 So the French will label create nickname. 47 00:02:45,360 --> 00:02:45,540 OK. 48 00:02:45,610 --> 00:02:52,390 So you know the difference between and exit quinsy and end and person X equals. 49 00:02:53,650 --> 00:02:56,340 So these two are very different things. 50 00:02:57,190 --> 00:03:03,640 So here the video face copied into X and here X is nickname of variable E. 51 00:03:05,250 --> 00:03:13,880 OK, here, the X created I here, the axis given a separate box, whereas Xindi mortara seem. 52 00:03:15,480 --> 00:03:16,690 So let's write code. 53 00:03:22,660 --> 00:03:26,170 So let's name this file as a reference. 54 00:03:28,820 --> 00:03:30,600 Variables, not CVB. 55 00:03:53,060 --> 00:04:04,510 Now, let us create a variable A which is initially then and I have a variable Y equals a.. 56 00:04:06,050 --> 00:04:09,200 Now, let's say there does make a reference variable. 57 00:04:09,710 --> 00:04:14,410 So end ampersand X equals a.. 58 00:04:15,260 --> 00:04:18,470 So let's create one mode defense variable. 59 00:04:19,190 --> 00:04:29,010 So end ampersand Z and ampersand Z equals a.. 60 00:04:31,180 --> 00:04:38,420 So ablest plus explicit plus vibe. 61 00:04:38,420 --> 00:04:41,680 Lisbeth's z plus plus. 62 00:04:42,590 --> 00:04:44,450 And now let us print values. 63 00:04:44,510 --> 00:04:46,670 So C out a. 64 00:04:50,150 --> 00:04:50,600 Ex. 65 00:04:54,320 --> 00:04:54,840 Ray. 66 00:04:57,830 --> 00:04:58,640 And Z. 67 00:04:59,830 --> 00:05:00,050 OK. 68 00:05:00,140 --> 00:05:02,730 So tell me where to live my output. 69 00:05:02,870 --> 00:05:04,040 Take out your pen and paper. 70 00:05:04,190 --> 00:05:06,590 Diatom this chord on your paper. 71 00:05:06,920 --> 00:05:08,000 And tell me where to live. 72 00:05:08,100 --> 00:05:08,510 Output. 73 00:05:08,600 --> 00:05:08,820 OK. 74 00:05:08,870 --> 00:05:10,040 You can post a video here. 75 00:05:11,600 --> 00:05:13,310 So let's see where the loom output. 76 00:05:17,510 --> 00:05:22,160 So in question, this line means create a bug's. 77 00:05:23,840 --> 00:05:30,270 The name of this box is a and the value is then second-line copy the value of it and do way. 78 00:05:30,890 --> 00:05:32,900 So create a new box. 79 00:05:34,120 --> 00:05:37,310 The name of this box is way and the value is then. 80 00:05:45,560 --> 00:05:48,440 Now, line number nine, make nickname. 81 00:05:49,460 --> 00:05:51,320 So name of this box is X. 82 00:05:52,940 --> 00:06:01,580 Make another nickname, so name of this box is also Z ableist, plus make you deliver an X plus, plus 83 00:06:02,150 --> 00:06:02,960 make it twin. 84 00:06:04,380 --> 00:06:08,370 Wyplosz plus sorry, Wyplosz, plus make it eleven. 85 00:06:09,920 --> 00:06:12,660 That plus plus make it Dean. 86 00:06:14,020 --> 00:06:22,680 OK, so CRT, which is Hardeen see out X, which is Tartine, see Holdway, which is eleven C outside, 87 00:06:22,770 --> 00:06:24,060 which is Tabin. 88 00:06:24,810 --> 00:06:26,120 So this should be my output. 89 00:06:28,370 --> 00:06:28,670 OK. 90 00:06:28,980 --> 00:06:29,290 Today. 91 00:06:29,400 --> 00:06:29,700 Today. 92 00:06:29,820 --> 00:06:30,530 Eleven, thirteen. 93 00:06:31,770 --> 00:06:34,250 Let's see whether my body's cracked or not. 94 00:06:37,050 --> 00:06:40,140 So 13, 13, 11 and 13. 95 00:06:40,920 --> 00:06:41,130 OK. 96 00:06:41,250 --> 00:06:44,010 So this was my output and my output is correct. 97 00:06:47,580 --> 00:06:48,090 OK, guys. 98 00:06:48,180 --> 00:06:50,790 So this was all about defense variables. 99 00:06:51,420 --> 00:06:51,950 Thank you.