WEBVTT 0 00:00.070 --> 00:04.890 In the previous video we have learned about logical operators logical operators are used for writing 1 00:04.950 --> 00:06.920 compound conditional statements. 2 00:06.930 --> 00:14.910 We can combine more than one conditional statement by using and or OR example and write a conditional 3 00:14.910 --> 00:17.020 statement and write the program on that. 4 00:17.400 --> 00:19.140 So what is the example here. 5 00:19.150 --> 00:24.060 see Let us take a example off of working hours and leisure hours. 6 00:24.480 --> 00:32.190 So in the daytime the hours starts from zero hour to twenty three hours total twenty four including zero 7 00:32.190 --> 00:34.240 twenty four hours, total 24 hours are there. 8 00:34.240 --> 00:34.770 now in this 9 00:34.890 --> 00:39.540 from morning 9:00 to evening 6:00. 10 00:39.540 --> 00:41.770 These are taken as working hours. 11 00:41.880 --> 00:47.780 So if I draw a line for 23 hours total 24 hours from zero to twenty three. 12 00:47.830 --> 00:50.160 Now suppose this is 9:00 right. 13 00:50.200 --> 00:58.950 This 9:00 so 6:00 evening will be taken as 18 hours in a 24 hour clock morning 9:00 a.m. to evening 14 00:58.950 --> 01:00.920 6:00 p.m. People do a job. 15 01:01.230 --> 01:05.070 So that job hours are from 9 to 18. 16 01:05.160 --> 01:08.190 So in a 24 hour clock. 17 01:08.380 --> 01:13.500 Now I want to find out weather hour given is a working out or leisure hour. 18 01:13.830 --> 01:16.490 So if I say 10:00, its a working hour. 19 01:17.160 --> 01:19.760 If I said 12:00 it's working hour. 20 01:20.010 --> 01:24.720 If I say 17:00 then also it is working hour 18:00 clock. 21 01:25.110 --> 01:26.430 Then also it is an working hour. 22 01:26.860 --> 01:28.830 So beyond 18 it's not working hour. 23 01:29.190 --> 01:30.560 So this what I want to check. 24 01:30.990 --> 01:35.610 So for that I have a flowchart here, enter hour read hour. 25 01:35.700 --> 01:42.940 Then if an hour is among 9 to 18 then it should print working hour. 26 01:42.940 --> 01:45.160 Otherwise it should print leisure. 27 01:45.230 --> 01:52.550 means It's not working hour then how to frame a condition that hour should be within this range within this range. 28 01:52.560 --> 01:57.360 So when you have to check something within the range you have to say it is greater than or equal to 29 01:57.400 --> 02:00.620 nine and less than or equal to 18. 30 02:00.630 --> 02:05.910 So there are two figures you have to take, greater than equal to nine means it should be on that 31 02:05.910 --> 02:07.910 side and on this side of 18. 32 02:07.920 --> 02:09.660 So let us write a condition for that. 33 02:09.750 --> 02:11.820 So condition looks like this. 34 02:11.820 --> 02:17.050 If hour is greater than equal to 9. 35 02:17.400 --> 02:25.560 And so AND means this is the operator we use, and hour is less than or equal to 18. 36 02:25.920 --> 02:26.630 Right. 37 02:26.640 --> 02:33.870 So it means in mathematics we write like this, hour greater than equal to nine less than equal to 18. 38 02:33.930 --> 02:38.450 So mostly students will be used to with this one writing this form of mathematical form. 39 02:38.580 --> 02:44.700 But in programming we cannot write the things like this actually these are two different conditions two 40 02:44.700 --> 02:47.040 different conditions and they are joined together. 41 02:47.460 --> 02:53.400 So for both the condition we have to write hour, both the times you have to write and we have to join these 42 02:53.400 --> 02:54.280 two using. 43 02:54.390 --> 03:00.480 And, so when you have to check the range and then you have to write AND you have the right two condition 44 03:00.480 --> 03:02.630 separately make it clear. 45 03:02.760 --> 03:06.590 So you'll come across many times this type of conditions you will come across. 46 03:06.620 --> 03:07.010 Right. 47 03:07.110 --> 03:10.900 When you have to convert them into a program you have to convert it like this. 48 03:11.010 --> 03:13.580 So write both of them and join them with 49 03:13.650 --> 03:18.270 And so let us fill up that in flowchart then will convert it into a program. 50 03:18.570 --> 03:22.380 So hour is greater than equal to nine. 51 03:22.410 --> 03:30.030 And so I'm not edging C++ operator here in simple English language I'm writing and hour is less than equal 52 03:30.030 --> 03:37.420 to 18 that's all, if this true it will print working otherwise it will print leisure. 53 03:37.780 --> 03:39.890 Now let us convert that into a program. 54 03:40.020 --> 03:43.180 So already I have prepared a few statements in the program. 55 03:43.180 --> 03:48.480 See the main function in this program we need first thing that is one variable so we should declare 56 03:48.490 --> 03:55.570 the variable then I have a message enter hour then reading hour, reading hour. 57 03:55.890 --> 03:59.600 Now I have to display the working or leisure. 58 03:59.670 --> 04:09.320 So here I will write down the condition if r is greater than equal to 9 and this is in C++ right. 59 04:09.540 --> 04:20.030 or is less than equal to 18 then I should print a message that is working. 60 04:20.640 --> 04:22.620 This can be inside flower bracket. 61 04:22.680 --> 04:32.680 But if you have a single statement you can skip it then else C out here it's leisure right. 62 04:33.990 --> 04:35.720 This is leisure that's all. 63 04:36.690 --> 04:38.230 So this is the program. 64 04:38.670 --> 04:43.020 So this is a simple program using compound conditional operations. 65 04:43.050 --> 04:46.840 So in the next video you will find one more example on this one. 66 04:46.950 --> 04:49.430 Then I have some coding exercises. 67 04:49.430 --> 04:54.540 So in some coding exercise I am asking you to write on this condition and in some coding exercise you 68 04:54.540 --> 05:00.140 have to write on most of the code in a function, maybe you have to write other things from here to 69 05:00.140 --> 05:05.850 to hear in coding exercise that is only a conditional statement and then printing something. 70 05:05.850 --> 05:07.620 So there is a demo available for this one. 71 05:07.620 --> 05:10.790 You can watch that demo and practice the program by yourself.