WEBVTT 00:00.910 --> 00:01.790 Hello, everyone. 00:02.110 --> 00:09.130 So in this particular session, we will learn about if conditions, but before learning about if conditions 00:09.130 --> 00:14.550 and knowing what exactly they are, we need to understand why the village required. 00:14.950 --> 00:18.270 So let us look at this piece of code there. 00:18.280 --> 00:24.610 I have value of geek as baking, which means that cake is baking. 00:24.940 --> 00:28.200 So we print the message that he is making. 00:28.630 --> 00:34.300 After that, we will print a simple message as good bye. 00:36.110 --> 00:40.730 Now, when I run this, I get the message, cake is baking and goodbye. 00:41.420 --> 00:47.240 Now, let's say we have a situation where cake might not really be baking. 00:47.660 --> 00:52.370 So in that case, the value of cake will be. 00:55.100 --> 01:05.150 Not picking, OK, so we in that particular case, we want to bring cake is not making any sort of cake 01:05.150 --> 01:06.700 is OK. 01:07.400 --> 01:09.190 So this is the dessert for us. 01:09.860 --> 01:16.600 Now, let us say we want to have both of these cases in our piece of code. 01:16.940 --> 01:20.810 Now, what will we do to have both of these considered? 01:21.200 --> 01:30.830 So in that case, we will be using if conditions, the if condition allows us to have responses to different 01:30.830 --> 01:36.170 scenarios or different situations which occur, why the program is running. 01:37.040 --> 01:41.630 So let us see if the value of variable cake is baking. 01:41.810 --> 01:48.230 Then I want to bring that cake is baking and the value when it is not baking, then I want to bring 01:48.230 --> 01:49.640 that cake is not baking. 01:49.760 --> 01:52.130 So I want to be these two options. 01:52.310 --> 01:55.580 So in that situation I can use if conditions. 01:56.360 --> 02:01.160 So let us suppose to that how we will write the if condition. 02:01.640 --> 02:07.940 So to write the if condition, we will have to first of all see if. 02:09.370 --> 02:13.120 And then we write the condition, so the condition is. 02:14.070 --> 02:14.630 Greg. 02:15.650 --> 02:16.910 Is equivalent to. 02:18.350 --> 02:18.920 Making. 02:21.340 --> 02:22.720 Now, consider this. 02:23.830 --> 02:32.470 The value of Kek has to be exactly breaking if I write Capital B, then this will not be equal to this 02:33.040 --> 02:35.400 because both of these strings are different. 02:35.890 --> 02:37.900 So we need to keep it as making. 02:39.000 --> 02:48.720 Then the apply of Golan, which means that the if condition is starting so doesn't exist if. 02:49.740 --> 02:53.040 Followed by the condition which we are trying to evaluate. 02:54.320 --> 03:00.380 Then fallen and then automatically, when you hit enter, you get this indentation. 03:01.290 --> 03:07.980 In case you do not get an indentation, you can press up and get this indentation and the whole piece 03:07.980 --> 03:13.590 of gold, which will be hot, which will be a part of this if condition would be written after this 03:13.590 --> 03:14.310 indentation. 03:14.880 --> 03:19.560 So let us see if Gache is baking, then we want to print. 03:22.920 --> 03:24.900 OK, and speaking. 03:26.420 --> 03:28.010 OK, and. 03:30.550 --> 03:32.710 This is a simple if condition. 03:33.000 --> 03:37.000 OK, after that, we want to print. 03:39.830 --> 03:40.490 Good bye. 03:42.440 --> 03:49.190 So when we say cake is baking, so it will, first of all, evaluate this particular condition, it 03:49.190 --> 03:53.020 will check if the value of cake is equivalent to this baking. 03:53.450 --> 04:00.830 If the response of this condition evaluation is true, then only it will run whatever piece of food 04:00.830 --> 04:07.310 would be present after this indentation, we could have more piece of code here, say like print. 04:08.990 --> 04:09.590 He. 04:20.130 --> 04:24.770 And many we could have any number of lines of code present here. 04:25.140 --> 04:32.960 And when I do not have this emendations, this means that this is outside this if condition. 04:33.210 --> 04:40.640 So no matter the cake is equivalent to baking or not, this line of code would anyhow be printed. 04:40.920 --> 04:48.660 This would run in any situation, only these lines of code, which are a part of this if condition will 04:48.660 --> 04:54.600 be run, if this key value, the value of the variable cake is equal to baking. 04:54.630 --> 04:56.160 So let us try that. 04:57.060 --> 04:58.070 So here you can see. 04:58.860 --> 05:02.280 So the value of geek's all letters. 05:03.410 --> 05:07.820 Run this one, so here the value of cake is equal to baking. 05:08.220 --> 05:15.260 Now I am running this so you can see that it is giving this value cake is baking, cake is and then 05:15.260 --> 05:15.650 goodbye. 05:16.460 --> 05:19.960 Now let us see how these conditions work, OK? 05:21.200 --> 05:26.780 So here we can see that the control flow will come to this if condition. 05:27.670 --> 05:32.810 And once the controlled flow comes to this condition, it will evaluate the condition which is present 05:32.810 --> 05:36.040 to you now after this evaluation. 05:37.010 --> 05:46.370 If there is any Nortman or non-zero value, it will correspond to two, and if the value is zero or 05:46.370 --> 05:48.710 null, it will be false. 05:49.650 --> 05:57.980 OK, now here we evaluate this particular condition and once we evaluate this condition, if the value 05:57.980 --> 06:07.160 is false, then the false expression would be run and the value is true, then the true expression would 06:07.160 --> 06:11.470 be done and after that it will go to the next statement. 06:12.710 --> 06:19.390 This is the condition of if so, if the condition is true, then this would be wrong. 06:20.000 --> 06:26.130 And if it is false, then we will have to provide the LS condition. 06:26.330 --> 06:27.990 Now what is its condition? 06:28.880 --> 06:34.520 So we see this that this is equivalent to making this condition is true. 06:35.210 --> 06:36.980 Then it runs this piece of wood. 06:37.220 --> 06:37.840 Now what. 06:37.840 --> 06:41.970 This cake is not equal to making so us run this piece of code. 06:41.990 --> 06:45.680 So once I run this, the value of geek has been updated law making. 06:46.130 --> 06:53.720 So now if I run this piece of code, it will not show me any messages because I have not given any is 06:53.810 --> 07:02.850 condition, but it will bring good barbarically now in case we want to provide a false condition. 07:02.870 --> 07:07.540 Also, we want to provide a response to the false criteria. 07:07.760 --> 07:09.950 In that case, we will write is. 07:11.210 --> 07:17.920 What Colin and whatever piece of code we want to done as a part of is we will write in below it. 07:18.350 --> 07:20.420 So let us say we want to run this only. 07:21.560 --> 07:23.270 So let me put this here. 07:26.020 --> 07:29.350 So now this line of code will run. 07:30.440 --> 07:37.460 If this condition is not to say the condition is true, it will run this piece of code and if the condition 07:37.460 --> 07:39.570 is not true, it will run this piece of good. 07:39.770 --> 07:41.370 So let us run this again. 07:42.080 --> 07:45.920 So now you can see we get the value Qik is not making. 07:45.920 --> 07:46.730 And then good bye. 07:46.730 --> 07:47.210 Good bye. 07:48.180 --> 07:48.550 Right. 07:48.780 --> 07:53.190 This is one scenario now we can have a simple if. 07:54.570 --> 07:57.960 Apart from that, we can have if and is both. 07:59.550 --> 08:08.360 That is one more condition where we can have if if I live and it's so, let us see how that works out. 08:09.450 --> 08:14.040 So we have a condition, if it's condition, if anything else. 08:14.520 --> 08:16.500 Now, let us see what these Chinna. 08:18.640 --> 08:23.440 Now, if you see this so first of all, it will verify this if condition. 08:24.450 --> 08:31.200 If the condition is true, then it will run the good luck, which is a part of this if condition, and 08:31.200 --> 08:36.120 then it will directly go to the end of the if condition. 08:36.510 --> 08:38.310 Oh, I'm Randy. 08:39.760 --> 08:41.490 Next, lines of code. 08:42.540 --> 08:49.950 Now, if this if condition is not true, then it will go to the next ayliffe expression, so it will 08:49.950 --> 08:51.760 evaluate this expression. 08:51.960 --> 08:57.010 Now if this expression is true, it will run this of block and then go to the end of it. 08:57.270 --> 09:01.440 Now, in case this is not true, then it will evaluate the next condition. 09:01.710 --> 09:05.420 If next condition is true, it will run that particular good luck. 09:05.580 --> 09:10.230 If it is not true, then it will go to the very next is good luck. 09:10.410 --> 09:15.660 If none of these if elif the codes are true then it will go to the end. 09:15.750 --> 09:17.880 Good luck and simply run. 09:17.890 --> 09:19.830 This is good. 09:20.050 --> 09:24.660 I run this one and stop or go to the next line of food. 09:25.850 --> 09:29.390 Now, let us see this in action, so we have this. 09:33.790 --> 09:35.830 So let's do it this way. 09:37.350 --> 09:43.490 So we have if Jake is making if it is not breaking, then we are doing this now. 09:43.500 --> 09:44.310 Let us see. 09:46.090 --> 09:52.900 If he is equivalent to baking, then this cake is making now Elif. 09:57.710 --> 10:02.810 Now, this is another if kind of a condition, so we need to give a condition here, if they don't give 10:02.810 --> 10:04.090 a condition, will not rule. 10:04.490 --> 10:06.800 So we need to give a condition sick. 10:08.230 --> 10:09.430 Is equivalent to. 10:11.340 --> 10:12.030 Beit. 10:13.680 --> 10:18.210 Then you want this particular piece of food to be run, so we want to bring. 10:31.850 --> 10:32.420 Then. 10:33.590 --> 10:39.170 We can have another day, live condition, we can have any number of live conditions here, so let us 10:39.170 --> 10:39.930 take. 11:03.030 --> 11:08.760 So we say no gig today, so let us try different scenarios here by changing the values of. 11:16.570 --> 11:21.400 So first of all, if the value of cake is baking. 11:27.340 --> 11:31.150 And we've done this so we get results as. 11:32.080 --> 11:45.850 Cake is baking, cake is, and then the final goodbye in case the value of cake is baked. 11:48.150 --> 11:53.040 We get cake is not baked, a cake is not baking. 12:00.130 --> 12:08.000 Now, see here, the give baked with a small V. So idiotically went to the ends condition. 12:08.200 --> 12:09.580 So what happened here? 12:09.580 --> 12:14.080 Is it checked if the key value is baking. 12:14.470 --> 12:15.840 So it was not true. 12:15.850 --> 12:18.010 So it went to the next live condition. 12:18.340 --> 12:21.410 A. The geek's value is baked with a capital B.. 12:21.430 --> 12:22.620 Now, this is not true. 12:22.990 --> 12:28.420 So it went to the next Ayliffe condition here to check if it is equivalent to don't like. 12:28.630 --> 12:30.090 So this is not equal to go. 12:30.100 --> 12:31.090 No, don't like. 12:31.100 --> 12:39.100 So it went to the is condition and granted finally now in case the value is capital B capital be baked. 12:39.460 --> 12:46.450 So now what will happen is it will bring cake is baked already and then it will train the next lines 12:46.480 --> 12:46.910 of code. 12:47.350 --> 12:54.520 And here if we have a don't like then it will just bring the message today and then goodbye. 12:55.940 --> 13:04.550 So this is about if conditions they are discussed about the if ayliffe conditions, we can also create 13:04.550 --> 13:12.770 misted if conditions which would have further indentation now while creating the indentation, one has 13:12.770 --> 13:16.300 to make sure that they do not get confused. 13:16.670 --> 13:21.230 So let us dry how we can create nested indentation you. 13:24.750 --> 13:29.130 So here we have a if condition, so let us try to create. 13:31.170 --> 13:32.580 Anaesthetise condition. 13:34.010 --> 13:38.530 So let us say we want to have a condition inside this flipflop. 13:39.670 --> 13:41.680 And here we want to evaluate. 13:51.820 --> 13:52.480 OK. 14:19.730 --> 14:20.750 Food is yummy. 14:23.000 --> 14:23.690 And. 14:25.230 --> 14:29.040 Let us say we want to have another if condition inside this. 14:53.000 --> 14:56.760 We can use El Sol Trujillo, but we are just using if. 15:26.870 --> 15:35.270 So here, if you see, we have created this foundation, which has further information inside this envelope, 15:35.930 --> 15:39.890 and it has some of the if condition, which has further information. 15:40.130 --> 15:48.380 Now, if you see each condition has a further indentation associated with it, this is the last condition. 15:49.330 --> 15:57.700 And this is the next if blog and prior to this, this was the original invasion, which we had. 15:57.970 --> 16:00.070 So let us give the bad news. 16:00.070 --> 16:00.580 Do it. 16:01.240 --> 16:02.170 Let us see. 16:03.390 --> 16:05.930 Geek is don't like. 16:08.630 --> 16:10.280 And let the food. 16:11.510 --> 16:12.110 The. 16:16.100 --> 16:20.420 Now, let us run this piece of code so we can say no today, food is yummy. 16:20.430 --> 16:20.630 Good. 16:21.710 --> 16:22.490 So. 16:24.760 --> 16:33.850 Cake is don't make so it says no cake today, then we have a food equal to tasty, then it is saying 16:33.850 --> 16:37.250 that food is yummy and finally saying goodbye. 16:37.570 --> 16:42.970 Apart from this, we can let us just change it a little bit. 16:44.400 --> 16:48.270 And then it says, no gig today, and that is good bye. 16:53.560 --> 16:57.130 We can also convert this into an air condition. 16:59.670 --> 17:01.020 And this. 17:05.260 --> 17:08.440 And for this, we will have to remove this emendations. 17:11.420 --> 17:20.840 So now you can see that it has value, not the one place so close to this ayliffe block, it will run 17:21.020 --> 17:22.890 this entire piece of code. 17:23.480 --> 17:26.750 So the first statement is no cake today. 17:26.760 --> 17:30.250 So it Prinstein then it evaluates this if condition. 17:31.100 --> 17:33.820 Now it checks of full value is tasty. 17:33.890 --> 17:36.860 So it is not d d d d d one. 17:37.160 --> 17:40.310 So it moves to the S condition and runs it. 17:41.820 --> 17:43.800 So, again, give me chocolate and good goodbye. 17:44.770 --> 17:46.660 So that is if condition. 17:46.700 --> 17:47.200 Thank you.