1 00:00:02,120 --> 00:00:03,950 Hey, guys, what's up? 2 00:00:04,550 --> 00:00:10,100 So today we are going to learn a new thing, which is called switch case. 3 00:00:12,270 --> 00:00:16,860 OK, so this is same as your finals. 4 00:00:17,410 --> 00:00:23,290 So, for example, if I for example, if my question is if the character is M. Brent. 5 00:00:23,560 --> 00:00:23,890 Monday. 6 00:00:26,420 --> 00:00:30,920 If the given character is the then print Tuesday. 7 00:00:33,260 --> 00:00:37,610 OK, so with the help of offenders, we can solve it very easily. 8 00:00:37,960 --> 00:00:40,820 What we will do, we will take a character, C.H.. 9 00:00:41,450 --> 00:00:47,900 We will take input and then we will check if passage equals M. 10 00:00:49,550 --> 00:00:52,700 Then we can print C out whatever they want to print. 11 00:00:53,470 --> 00:00:55,190 And see if we can check. 12 00:00:55,730 --> 00:01:06,590 If my character is D, then I can print something like Tuesday as I can print like invalid character. 13 00:01:07,930 --> 00:01:08,140 OK. 14 00:01:08,520 --> 00:01:13,410 So we can solve this problem easily with the help of if and save. 15 00:01:13,710 --> 00:01:14,250 And as. 16 00:01:15,380 --> 00:01:19,940 But we have to solve this problem with the help of such case. 17 00:01:21,040 --> 00:01:24,740 So such case works very similar to offenders. 18 00:01:25,430 --> 00:01:26,990 So what we will do is. 19 00:01:28,730 --> 00:01:31,710 We will take a character, C.H.. 20 00:01:32,030 --> 00:01:35,190 We will take input, sit in S.H.. 21 00:01:35,690 --> 00:01:36,140 Now. 22 00:01:37,480 --> 00:01:39,840 We will use a keyword switch. 23 00:01:41,750 --> 00:01:42,380 C.H.. 24 00:01:43,590 --> 00:01:49,050 And then here I will be, I think is so case S.H. equals M. 25 00:01:50,050 --> 00:01:54,670 So if this is the condition, what I will do, I will see you out Monday. 26 00:01:57,250 --> 00:01:58,600 See you out Monday. 27 00:01:59,230 --> 00:01:59,770 Break. 28 00:02:03,020 --> 00:02:08,120 And if my character is thie, then what they know what I will do. 29 00:02:08,180 --> 00:02:09,110 I will seek out. 30 00:02:11,050 --> 00:02:11,440 Tuesday. 31 00:02:14,910 --> 00:02:16,290 And then break. 32 00:02:18,210 --> 00:02:23,880 Similarly, let's see if my current bet is S then C out. 33 00:02:25,520 --> 00:02:26,010 Sandy. 34 00:02:28,630 --> 00:02:29,180 Break. 35 00:02:31,890 --> 00:02:32,150 OK. 36 00:02:32,600 --> 00:02:39,920 And let's see if character is neither M nor B. not as so deformed. 37 00:02:42,030 --> 00:02:42,980 So they default. 38 00:02:45,250 --> 00:02:45,990 See out. 39 00:02:48,560 --> 00:02:51,520 Invalid corrected. 40 00:02:53,980 --> 00:02:54,580 Break. 41 00:02:56,770 --> 00:02:58,540 And here, my switch will finish. 42 00:02:58,600 --> 00:03:00,160 OK, so this is the opening of search. 43 00:03:00,940 --> 00:03:02,170 This is ending. 44 00:03:02,770 --> 00:03:05,810 So here there is no need to write break. 45 00:03:06,580 --> 00:03:08,390 And via I am writing break here. 46 00:03:08,530 --> 00:03:13,820 Because if the given characters am, I will do my book and then break. 47 00:03:14,830 --> 00:03:15,100 OK. 48 00:03:16,060 --> 00:03:20,900 In case of if and if they were automatically broken. 49 00:03:21,370 --> 00:03:21,690 OK. 50 00:03:22,120 --> 00:03:26,440 So they were automatically broken with the help of these opening and closing. 51 00:03:26,890 --> 00:03:28,450 So here we have to break it. 52 00:03:28,500 --> 00:03:29,440 But I think this. 53 00:03:29,590 --> 00:03:30,070 Break. 54 00:03:30,790 --> 00:03:31,240 Break. 55 00:03:31,870 --> 00:03:32,440 And big. 56 00:03:33,160 --> 00:03:36,790 And I'm telling you, there is no need to write break here. 57 00:03:37,420 --> 00:03:37,720 Why? 58 00:03:38,140 --> 00:03:41,530 Because by writing brick here I will reach. 59 00:03:42,620 --> 00:03:43,370 At this point. 60 00:03:43,460 --> 00:03:46,790 Similarly, if this be extreme, when will it be executed? 61 00:03:46,880 --> 00:03:53,450 I will reach here and similarly, when this big statement will be executed, I will reach here. 62 00:03:54,410 --> 00:03:58,220 But in case of default, default is already the last line. 63 00:03:58,640 --> 00:04:01,040 Default will be written only at the last. 64 00:04:02,000 --> 00:04:02,310 OK. 65 00:04:02,660 --> 00:04:03,470 So after this. 66 00:04:03,600 --> 00:04:09,650 So after writing the default statement, the next line is automatically this ending record. 67 00:04:09,710 --> 00:04:10,970 So there is no need to write. 68 00:04:11,000 --> 00:04:11,670 Break it. 69 00:04:13,350 --> 00:04:16,160 OK, so let us implemented. 70 00:04:28,560 --> 00:04:31,650 Switch Nazi BP. 71 00:05:01,720 --> 00:05:10,850 So I am taking a variable S.H. user will give us the value of variable S.H.. 72 00:05:11,470 --> 00:05:13,330 And now I'm using switch. 73 00:05:14,380 --> 00:05:16,640 So switch S.H.. 74 00:05:18,340 --> 00:05:20,860 And now I will be having cases. 75 00:05:24,250 --> 00:05:25,010 So case. 76 00:05:28,170 --> 00:05:29,190 My character is. 77 00:05:35,300 --> 00:05:41,120 So I have to print see out Monday. 78 00:05:48,530 --> 00:05:50,320 And then we have to right break. 79 00:05:51,140 --> 00:05:54,950 So break is very important, Don, for a gator, too, right? 80 00:05:55,190 --> 00:05:56,720 OK, so it is very important. 81 00:05:57,980 --> 00:06:04,010 Now, the next case is my character is. 82 00:06:05,270 --> 00:06:09,770 So in this case, I have to print QST so C out. 83 00:06:12,560 --> 00:06:13,010 Tuesday. 84 00:06:18,010 --> 00:06:20,170 So you can you can write multiple lines. 85 00:06:20,500 --> 00:06:23,960 For example, you can write here also. 86 00:06:24,120 --> 00:06:25,330 Let's let Soucy out. 87 00:06:26,890 --> 00:06:27,250 Hello. 88 00:06:27,580 --> 00:06:29,920 Okay, so there is no compulsion that we have to write. 89 00:06:30,340 --> 00:06:31,540 We can write only one line. 90 00:06:31,630 --> 00:06:34,690 No, we can do anything that we want to do. 91 00:06:35,350 --> 00:06:38,650 And when your work is over at the end. 92 00:06:38,770 --> 00:06:39,190 Right. 93 00:06:39,310 --> 00:06:39,790 Break. 94 00:06:41,050 --> 00:06:41,330 OK. 95 00:06:42,280 --> 00:06:42,880 So let's see. 96 00:06:45,780 --> 00:06:48,510 Case when my character is as. 97 00:06:50,550 --> 00:06:52,170 So then I have to see you out. 98 00:06:54,030 --> 00:06:54,660 Let's see. 99 00:06:55,480 --> 00:06:55,920 Sunday. 100 00:07:03,890 --> 00:07:05,720 So as I told you, we can do anything. 101 00:07:05,750 --> 00:07:11,000 For example, suppose if I am having a very Billye, I can also incremented value here. 102 00:07:12,380 --> 00:07:13,220 We can do anything. 103 00:07:14,850 --> 00:07:19,860 OK, so suppose there's a variable, I guess so, let's make it. 104 00:07:23,240 --> 00:07:26,390 Let's say and die equals when. 105 00:07:28,520 --> 00:07:28,710 OK. 106 00:07:28,790 --> 00:07:34,940 And at the end, we can write default in case of a Fenner's. 107 00:07:35,660 --> 00:07:36,390 The last line. 108 00:07:36,440 --> 00:07:39,030 The last we used to write this is. 109 00:07:39,230 --> 00:07:40,630 So here we will write default. 110 00:07:41,570 --> 00:07:46,790 So default default means when all that conditions are default, then default. 111 00:07:46,790 --> 00:07:50,180 The statement will be executed to seek out 112 00:07:52,820 --> 00:07:54,920 invalid character. 113 00:07:56,570 --> 00:07:56,780 OK. 114 00:07:57,290 --> 00:07:58,010 So here you. 115 00:07:58,030 --> 00:07:59,450 There is no need to write big. 116 00:07:59,670 --> 00:08:01,480 OK, you can write it. 117 00:08:02,030 --> 00:08:03,230 My day is no compulsion. 118 00:08:03,470 --> 00:08:04,880 OK, so I am not writing. 119 00:08:06,680 --> 00:08:09,020 So this is all that we have to do. 120 00:08:10,070 --> 00:08:12,830 Okay, so let's run our program. 121 00:08:23,790 --> 00:08:24,320 Let's hear that. 122 00:08:24,410 --> 00:08:25,220 In four days. 123 00:08:25,430 --> 00:08:29,000 And so Monday's getting printer. 124 00:08:32,190 --> 00:08:34,200 Let's say the in four days. 125 00:08:35,600 --> 00:08:39,690 So Tuesday and hello is getting printed. 126 00:08:40,530 --> 00:08:50,130 And similarly, let's see my characters as so Sun is getting printed and also the value of I is incremented 127 00:08:50,130 --> 00:08:50,700 by one. 128 00:08:52,110 --> 00:08:55,810 So you can bring I hear you out. 129 00:08:55,870 --> 00:08:56,160 I. 130 00:09:01,210 --> 00:09:03,190 Knowledge tested again for S. 131 00:09:04,680 --> 00:09:11,870 So if my character is as Sandy and too is getting Prenter the way Levi is incremented by two. 132 00:09:13,630 --> 00:09:18,030 And now let us give an invalid character to W.. 133 00:09:18,940 --> 00:09:20,760 So output is invalid. 134 00:09:21,780 --> 00:09:22,320 Character. 135 00:09:22,770 --> 00:09:24,000 So how it is working? 136 00:09:26,330 --> 00:09:27,920 Just like a friend is. 137 00:09:29,290 --> 00:09:32,890 For example, let's say my input is DeBlois. 138 00:09:33,490 --> 00:09:36,490 So I will check is DeBlois it to him? 139 00:09:36,550 --> 00:09:36,850 No. 140 00:09:37,650 --> 00:09:38,600 Is WC history? 141 00:09:38,670 --> 00:09:39,050 No. 142 00:09:39,480 --> 00:09:40,240 As no. 143 00:09:40,570 --> 00:09:42,670 So all these two conditions are false. 144 00:09:43,090 --> 00:09:46,180 Then I will reach and the false statement invalid. 145 00:09:46,660 --> 00:09:47,190 Correct. 146 00:09:47,860 --> 00:09:49,720 So our word will be invalid character. 147 00:09:50,470 --> 00:09:51,910 Let's say my input is. 148 00:09:54,640 --> 00:09:55,960 So let's hear my input is. 149 00:09:57,430 --> 00:10:00,240 So first of all, I will check is Amoco's him? 150 00:10:00,430 --> 00:10:01,540 Yes, the condition is true. 151 00:10:01,630 --> 00:10:04,360 You will print Monday and then you will break. 152 00:10:05,140 --> 00:10:08,500 So by writing a statement, you will reach at the end. 153 00:10:10,230 --> 00:10:12,080 OK, so now it probably be Monday. 154 00:10:13,830 --> 00:10:16,340 Similarly, let's say you give input B.. 155 00:10:17,010 --> 00:10:20,320 So, first of all, you will check this condition is Emma Christie. 156 00:10:20,490 --> 00:10:20,850 No. 157 00:10:21,310 --> 00:10:22,910 Then Estee Acquisti. 158 00:10:23,050 --> 00:10:24,120 Yet the condition is true. 159 00:10:24,180 --> 00:10:25,330 You will print Tuesday. 160 00:10:25,440 --> 00:10:28,600 Then you will print yellow and then brick by writing brief statement. 161 00:10:28,610 --> 00:10:30,360 You will reach and. 162 00:10:31,760 --> 00:10:33,440 And similarly, for as. 163 00:10:35,180 --> 00:10:35,470 OK. 164 00:10:35,920 --> 00:10:38,770 So the floor is very similar to a finals. 165 00:10:40,010 --> 00:10:43,010 Now, what would happen if I remove Blake's statement? 166 00:10:44,290 --> 00:10:44,830 Let's see. 167 00:10:45,900 --> 00:10:49,520 So if I want to remove so if I removed this break. 168 00:10:50,130 --> 00:10:51,030 So what will happen? 169 00:10:51,210 --> 00:10:52,680 I believe we should not do this. 170 00:10:53,430 --> 00:10:55,980 But if I am doing this, then what will happen? 171 00:11:01,170 --> 00:11:05,190 So if my input is M Monday's getting Brendan. 172 00:11:06,550 --> 00:11:08,770 So Monday, Monday is getting printed. 173 00:11:08,860 --> 00:11:10,660 Then this brief statement is executed. 174 00:11:11,110 --> 00:11:12,760 So for them, it is working fine. 175 00:11:14,030 --> 00:11:15,500 Let us best for as. 176 00:11:18,770 --> 00:11:21,950 So Sunday and do so s is also working fine. 177 00:11:23,150 --> 00:11:23,380 OK. 178 00:11:23,900 --> 00:11:31,910 Now, let us test for our default and character, let's say a so invalid character default is also working 179 00:11:32,330 --> 00:11:32,720 fine. 180 00:11:33,260 --> 00:11:36,830 Now we will see what will happen if I give B as input. 181 00:11:39,850 --> 00:11:49,900 So give us input Tuesday, hello, Sunday, and do so Tuesday, hello, Sunday, and do so what will 182 00:11:49,900 --> 00:11:51,580 happen if your home Blake's treatment? 183 00:11:53,090 --> 00:11:56,390 So this is my big statement that I have removed. 184 00:11:56,750 --> 00:11:57,560 So what will happen? 185 00:11:57,920 --> 00:11:58,600 He has input. 186 00:11:58,800 --> 00:12:00,560 They will check a Istiklal with him. 187 00:12:00,740 --> 00:12:01,130 No. 188 00:12:01,550 --> 00:12:03,880 Then he will check is the to be. 189 00:12:03,980 --> 00:12:04,340 Yes. 190 00:12:04,790 --> 00:12:05,140 So what? 191 00:12:05,330 --> 00:12:06,080 What it will do. 192 00:12:06,170 --> 00:12:07,600 It will print Tuesday. 193 00:12:08,110 --> 00:12:09,590 So Tuesday will get the printer. 194 00:12:10,380 --> 00:12:11,870 Then it will come to next line. 195 00:12:11,990 --> 00:12:12,590 It will print. 196 00:12:12,650 --> 00:12:13,040 Hello. 197 00:12:13,400 --> 00:12:15,930 So Hallowell get printed now. 198 00:12:16,590 --> 00:12:17,670 Brick is not there. 199 00:12:18,110 --> 00:12:20,510 If Brick was there, my output will be too strong. 200 00:12:20,570 --> 00:12:20,870 Hello. 201 00:12:21,200 --> 00:12:25,100 And I will reach at this point since break is not there. 202 00:12:25,220 --> 00:12:26,270 I will reach this line. 203 00:12:26,600 --> 00:12:27,110 Sunday. 204 00:12:28,210 --> 00:12:29,970 I guess this condition will not be checked. 205 00:12:31,050 --> 00:12:32,220 I will likely reach here. 206 00:12:32,370 --> 00:12:33,370 I will print Sunday. 207 00:12:33,870 --> 00:12:36,140 The value of I is incremented by one. 208 00:12:36,540 --> 00:12:41,530 Then CEO day two is getting printed and here I got breeks treatment. 209 00:12:42,600 --> 00:12:42,890 Okay. 210 00:12:43,220 --> 00:12:45,150 Here I got a brief statement. 211 00:12:45,240 --> 00:12:46,350 Then it will break. 212 00:12:48,370 --> 00:12:48,590 OK. 213 00:12:48,670 --> 00:12:53,890 So if Big Street Bank was not there, if this big -- right is also removed, I will come down. 214 00:12:54,820 --> 00:12:56,040 I will print in relitigated. 215 00:12:56,070 --> 00:12:56,860 But Anton. 216 00:12:58,060 --> 00:13:02,510 OK, so that is the reason why using Brigg is important. 217 00:13:04,330 --> 00:13:04,640 OK. 218 00:13:05,380 --> 00:13:08,830 So there are use cases also of note writing. 219 00:13:08,970 --> 00:13:09,960 Rick, let me show you. 220 00:13:11,820 --> 00:13:13,460 So first, they're disconnected. 221 00:13:15,250 --> 00:13:16,180 Now what I want. 222 00:13:18,840 --> 00:13:21,510 Let me show you the benefit. 223 00:13:24,540 --> 00:13:28,430 For example, case, small limb. 224 00:13:29,230 --> 00:13:33,810 So for small lamb, virtual game output, my output should be Monday also. 225 00:13:34,710 --> 00:13:34,910 OK. 226 00:13:34,980 --> 00:13:36,530 So my Bush would be Monday. 227 00:13:38,060 --> 00:13:40,350 So what what I will do, I will leave it blank. 228 00:13:42,400 --> 00:13:43,150 Just it. 229 00:13:45,100 --> 00:13:47,390 Now, give the value small them as input. 230 00:13:47,490 --> 00:13:48,170 So small them. 231 00:13:49,210 --> 00:13:49,720 Boom. 232 00:13:49,990 --> 00:13:51,250 Monday is getting printed. 233 00:13:52,320 --> 00:13:54,990 And this is war and this was our requirement. 234 00:13:55,740 --> 00:13:56,760 So how it happens? 235 00:13:59,530 --> 00:14:00,640 So how it works? 236 00:14:01,150 --> 00:14:05,880 You'll give small as an input M equals M. 237 00:14:06,400 --> 00:14:07,810 You have not eaten anything. 238 00:14:07,900 --> 00:14:10,270 Also, there is no breeks treatment. 239 00:14:10,660 --> 00:14:12,310 So this condition will not be djent. 240 00:14:12,370 --> 00:14:18,250 I will reach here Monday blueprinted and then base treatment will be executer and you will reach and 241 00:14:18,250 --> 00:14:19,090 off switch. 242 00:14:20,670 --> 00:14:20,920 OK. 243 00:14:23,060 --> 00:14:30,650 So if you want to ride this same in a friend is what you could have done if my character. 244 00:14:30,790 --> 00:14:36,710 It was it was Capital M or my character Aequitas. 245 00:14:36,890 --> 00:14:41,960 It was small M, then you will print C out Monday. 246 00:14:43,010 --> 00:14:44,390 And this is the closing. 247 00:14:45,290 --> 00:14:48,680 OK, so this closing and this break, they are similar. 248 00:14:50,220 --> 00:14:55,350 OK, so this all can be used in this way. 249 00:14:56,340 --> 00:14:59,760 By not writing brick or by not writing any statement. 250 00:15:01,920 --> 00:15:04,990 Okay, so let's see some more examples. 251 00:15:09,650 --> 00:15:15,890 So I am doing some changes to my discordantly, so I am going to move angered. 252 00:15:17,440 --> 00:15:20,850 Now for em, let's say this came one day. 253 00:15:21,790 --> 00:15:25,240 No letters and a condition for small D. also. 254 00:15:28,160 --> 00:15:33,290 So case I have small D. 255 00:15:36,320 --> 00:15:40,450 And then in that case, where do you want to do is I want to bring. 256 00:15:40,530 --> 00:15:41,750 And that's say Tuesday. 257 00:15:42,830 --> 00:15:44,810 So see out Tuesday. 258 00:15:49,710 --> 00:15:50,250 Blake. 259 00:15:53,000 --> 00:15:54,470 And now under those three move. 260 00:15:59,710 --> 00:16:00,430 This hello. 261 00:16:04,920 --> 00:16:07,340 Also, let us remove this big statement. 262 00:16:10,280 --> 00:16:11,990 So, OK, so this is all. 263 00:16:12,290 --> 00:16:14,000 OK, let's change this also. 264 00:16:14,780 --> 00:16:16,700 Instead of writing in inhalator character. 265 00:16:19,390 --> 00:16:31,820 And the M or M or the O or small T. 266 00:16:33,160 --> 00:16:34,810 OK, so let's see. 267 00:16:35,060 --> 00:16:37,060 You have to tell me what will be my output. 268 00:16:47,910 --> 00:16:49,160 We don't need you also. 269 00:16:49,230 --> 00:16:50,630 So I am removing it. 270 00:16:53,350 --> 00:16:54,350 So let's see. 271 00:16:58,370 --> 00:17:05,030 So for small him virtual room output, my output should be Monday and then bakes, children will be 272 00:17:05,030 --> 00:17:07,440 executed, some output should be Monday. 273 00:17:08,840 --> 00:17:09,040 OK. 274 00:17:09,260 --> 00:17:10,970 Someone is getting printed. 275 00:17:11,150 --> 00:17:11,540 Correct. 276 00:17:13,440 --> 00:17:16,470 For Capital M. Also, Margaret will be Monday. 277 00:17:16,650 --> 00:17:17,130 No doubt. 278 00:17:18,070 --> 00:17:21,180 OK, so now see the interesting part. 279 00:17:21,840 --> 00:17:22,560 Capital City. 280 00:17:25,000 --> 00:17:28,780 So if my input is Capital D. 281 00:17:30,500 --> 00:17:31,950 So in for Capital D. 282 00:17:32,220 --> 00:17:33,350 What should be my output? 283 00:17:36,000 --> 00:17:37,770 Tuesday and Tuesday. 284 00:17:39,050 --> 00:17:41,590 OK, so outproduced, who is Yanda is J. 285 00:17:41,780 --> 00:17:44,180 And this was expected. 286 00:17:48,780 --> 00:17:50,850 So you are giving these as input. 287 00:17:51,180 --> 00:17:55,650 So first of all, we will check this condition false, this condition false, this condition. 288 00:17:56,520 --> 00:17:57,940 I will print Tuesday. 289 00:17:58,320 --> 00:18:01,320 Then I will not check this condition because there is no big statement. 290 00:18:01,350 --> 00:18:02,390 So I will like lead each year. 291 00:18:03,060 --> 00:18:07,110 I will bring it Tuesday and then I'll get based treatment. 292 00:18:07,170 --> 00:18:08,310 So I will reach here. 293 00:18:09,910 --> 00:18:11,350 OK, so this is how it is looking. 294 00:18:12,610 --> 00:18:14,780 Now, let's see for small, do you also. 295 00:18:17,660 --> 00:18:18,260 Smartie. 296 00:18:18,920 --> 00:18:19,370 Tuesday. 297 00:18:19,930 --> 00:18:20,170 OK. 298 00:18:21,780 --> 00:18:25,160 Expected and now let us go in a little bit. 299 00:18:26,100 --> 00:18:26,870 Let's see, eh? 300 00:18:27,990 --> 00:18:29,000 So enter M. 301 00:18:29,860 --> 00:18:30,190 Oh. 302 00:18:30,300 --> 00:18:31,790 So this is their default statement. 303 00:18:32,740 --> 00:18:34,180 There is no compulsion to write. 304 00:18:34,220 --> 00:18:35,100 Default statement. 305 00:18:36,270 --> 00:18:37,200 It is our choice. 306 00:18:39,300 --> 00:18:41,490 Now, let us give invalided, connected. 307 00:18:44,120 --> 00:18:46,220 Nothing will happen as expected. 308 00:18:46,940 --> 00:18:47,300 Why? 309 00:18:47,720 --> 00:18:54,100 Because first of all, this A will be checked with them, then with a capital M, then capital D. Then 310 00:18:54,100 --> 00:19:00,830 small B, all therefore conditional false default is not there spiritual federal and returns zero will 311 00:19:00,830 --> 00:19:01,580 be executed. 312 00:19:01,760 --> 00:19:03,130 So nothing is getting printed. 313 00:19:04,160 --> 00:19:04,480 OK. 314 00:19:05,060 --> 00:19:07,400 So this is how switch case work. 315 00:19:07,910 --> 00:19:10,220 So such case is very similar to offenders. 316 00:19:10,670 --> 00:19:18,200 But I always prefer to use offenders because if as is much more simple than switch keys, there are 317 00:19:18,200 --> 00:19:20,250 many chances of mistaken switching keys. 318 00:19:20,960 --> 00:19:25,090 So I always prefer to use a friend as a comfort. 319 00:19:25,100 --> 00:19:26,200 They will switch case. 320 00:19:26,660 --> 00:19:30,170 You can use switch gears, but I always use a friend. 321 00:19:31,400 --> 00:19:33,240 OK, so this is it for this video. 322 00:19:33,290 --> 00:19:33,770 Thank you.