WEBVTT 00:00.360 --> 00:05.760 In this lecture I want to go over some things that can modify how the control flow of the loop will 00:05.760 --> 00:07.180 execute. 00:07.260 --> 00:10.680 The first one is called the break statement. 00:10.680 --> 00:19.040 So we saw the break statement before with our switch statements when the execution hits the break statement. 00:19.040 --> 00:22.350 It breaks out of the switch statement entirely. 00:22.560 --> 00:24.720 Well the same thing happens in a loop. 00:24.750 --> 00:37.320 So let's say we had this examples let's say Konst it Max awls to 10 and do a for loop and we'll say 00:37.330 --> 00:51.370 it calls to 1 in is less than max or less than or equal to max plus plus. 00:52.030 --> 01:05.080 And here we're going to break halfway through the entire run of the set or if it is equal to Max over 01:05.080 --> 01:05.740 to 01:08.460 --> 01:10.230 say see Ouch 01:13.230 --> 01:14.880 rekeying at 01:18.510 --> 01:29.610 current endl and we're going to have the break statement here and then we're saying See Ouch just like 01:29.610 --> 01:39.320 we had in the last one the current iteration is in. 01:39.910 --> 01:46.550 And then we're going to have here or just say something simple outside 01:48.890 --> 01:49.680 the 4 01:53.420 --> 01:54.940 Endal. 01:54.960 --> 02:07.140 So what this is going to do is kind of loop through 1 to Max and if the iteration variable is equal 02:07.140 --> 02:12.210 to Max over to a max of or two in this case will be five. 02:12.360 --> 02:20.540 We're going to break out of the loop and we're not going to do this statement any more in fact or I 02:20.540 --> 02:29.150 can do the loop or we're just going to break out of the loop and output that we're outside the for loop 02:29.150 --> 02:29.980 now. 02:30.230 --> 02:36.520 So you should see iterations 1 to 4. 02:36.820 --> 02:43.660 And then at the fifth one we're going to say breaking out or breaking at 5 and then we shouldn't see 02:43.660 --> 02:47.170 any more of this output. 02:47.170 --> 02:50.570 And then we're just going to see this output. 02:50.860 --> 02:51.910 So outside the forum. 02:51.940 --> 02:54.000 So let's see if that is what happens. 02:55.110 --> 02:58.670 So here is current iteration is one. 02:58.680 --> 03:05.900 And then when you say 2 3 4 and then we say breaking out at 5 and then outside the forum. 03:05.910 --> 03:12.360 So this break statement really just broke out of the for loop. 03:12.540 --> 03:15.990 That's that's kind of what it does. 03:16.930 --> 03:26.320 So this is this can be useful if say were trying to find something and then we find it and then we just 03:26.320 --> 03:36.650 kind of want to stop looping entirely so or be using break a bit later to good use. 03:36.650 --> 03:45.860 I think so let's see the next one I want to go over which is the continue statement. 03:46.000 --> 03:51.680 So I really use the continue statement but it it is kind of interesting. 03:52.120 --> 03:59.790 It skips the remaining statements in the loop body once it's executed until the next loop iteration. 03:59.830 --> 04:08.530 So let's see an example let's modify this a little bit say ran into Max equals to hundred and right 04:08.530 --> 04:21.740 go from 1 to 100 and say hi is her modular to lose to zero so every even number 04:25.340 --> 04:29.240 we're going to say continue 04:34.870 --> 04:35.460 to new 04:38.110 --> 04:46.870 immigrants are going to print out say we're going to print that that's fine and we don't need this anymore. 04:49.340 --> 04:57.950 So what it's going to do is we're going to loop through and every time we see an even number we're going 04:57.950 --> 05:03.670 to skip the rest of the statements in the loop. 05:03.710 --> 05:04.310 So. 05:04.460 --> 05:10.490 So we should see only the odd statements in the loop or the output. 05:10.490 --> 05:12.700 So let's run this. 05:12.730 --> 05:22.020 So here it is 1 3 5 7 9 11 13 etc. to 99. 05:22.300 --> 05:25.120 So this is one way too. 05:25.360 --> 05:35.110 So the statement really just skips the rest of the loop and just goes back up to the top increments 05:35.110 --> 05:42.130 the the iteration variable and then checks again to see if it should still continue or not checks condition 05:42.940 --> 05:47.820 and then does the next iteration. 05:48.140 --> 05:54.270 So continues really a way to skip statements if you want. 05:54.350 --> 05:58.930 Again I don't I rarely use this but sometimes it can be quite useful. 05:59.010 --> 05:59.580 So 06:06.110 --> 06:11.900 in the next lecture I want to go over some nested loops.