1 00:00:00,180 --> 00:00:04,830 Let's go ahead and try some other things, so we have these volumes here. 2 00:00:05,460 --> 00:00:08,180 Let's kind of mess around with the ebullience. 3 00:00:08,220 --> 00:00:10,740 So remember that the. 4 00:00:12,460 --> 00:00:20,320 Thing inside of the parentheses just needs to evaluate to true or false. 5 00:00:20,890 --> 00:00:21,900 That is the rule. 6 00:00:21,910 --> 00:00:26,800 So that's what these conditional statements are based on this called conditionals because it's a condition 7 00:00:26,800 --> 00:00:28,690 in which it's true or which is false. 8 00:00:29,440 --> 00:00:37,850 So a boolean itself kind of already evaluates to true or false because we're storing the literal value. 9 00:00:37,870 --> 00:00:40,180 True or false inside of the variable, right? 10 00:00:40,750 --> 00:00:44,530 So I could simply just use the Boolean as a condition. 11 00:00:45,510 --> 00:00:47,490 Like, for example, be one is true. 12 00:00:48,000 --> 00:00:50,550 So that's kind of saying like if? 13 00:00:52,020 --> 00:00:58,380 And then whatever is in between here needs to evaluate to true or false, if true, so whatever is in 14 00:00:58,380 --> 00:01:01,710 between here is true right now because it's be one. 15 00:01:03,220 --> 00:01:06,700 Now, as a value trousseau, it will execute the code here if it's B2. 16 00:01:06,730 --> 00:01:10,590 It's false and it will not execute the code here, so I'm going to control TSS. 17 00:01:11,320 --> 00:01:17,040 And actually, before I do that, I should say, you know, I'll change this. 18 00:01:17,050 --> 00:01:20,920 B2 is true or P1 billion is true. 19 00:01:21,820 --> 00:01:26,890 So let's save that and then going to go compile it, run it. 20 00:01:26,890 --> 00:01:29,380 And we noticed that this out P1 is true. 21 00:01:29,380 --> 00:01:34,330 But what if I go here and I say B2 and I say, I change this? 22 00:01:35,560 --> 00:01:40,960 You don't need to change this, but I'm just changing it for us to kind of be able to refer to what 23 00:01:40,960 --> 00:01:41,730 we're talking about. 24 00:01:41,740 --> 00:01:47,530 So if I put if B2, that would mean B2 is true if it was true, but it's not. 25 00:01:47,530 --> 00:01:49,180 So we're not going to see anything run here. 26 00:01:49,180 --> 00:01:55,120 So I can tell s compile run it and we don't see anything. 27 00:01:57,040 --> 00:01:58,960 So let's try something else interesting. 28 00:01:58,960 --> 00:02:00,100 So I. 29 00:02:01,770 --> 00:02:03,750 Put the equals and not equals. 30 00:02:04,860 --> 00:02:06,870 We also just have a simple. 31 00:02:07,410 --> 00:02:12,480 Not without the equals, which is an exclamation point, so. 32 00:02:12,780 --> 00:02:18,720 And remember from the last lecture when we were working with just logic and a theory behind it and the 33 00:02:18,720 --> 00:02:25,740 truth tables, remember that not just inverted, whatever the bullying was. 34 00:02:25,950 --> 00:02:29,390 So if you put not true, that means false. 35 00:02:29,400 --> 00:02:35,100 And remember, like the not not true is kind of true again, right? 36 00:02:35,100 --> 00:02:39,360 Because like, not true is false and you put another notch in front of it in terms of back to true. 37 00:02:40,320 --> 00:02:43,420 So if we invert this, B two is false, right? 38 00:02:43,440 --> 00:02:47,490 So if I put an exclamation point before it, it will say if. 39 00:02:48,700 --> 00:02:49,750 Not false. 40 00:02:50,230 --> 00:02:52,930 And it's just inverting this false to a true. 41 00:02:55,280 --> 00:02:59,180 So let's go ahead and let's try this out, see what happens. 42 00:03:01,500 --> 00:03:02,220 So I run it. 43 00:03:03,150 --> 00:03:08,640 All right, copilot, sorry, and then I run it and it actually runs the code in here it says B2 is 44 00:03:08,640 --> 00:03:10,950 to be to really isn't true. 45 00:03:11,370 --> 00:03:12,210 It's false. 46 00:03:13,170 --> 00:03:14,310 Just say not me. 47 00:03:14,310 --> 00:03:18,540 Two is true to print something incorrect in their right. 48 00:03:21,610 --> 00:03:24,370 So not me, too, is true because we too is false. 49 00:03:24,670 --> 00:03:33,430 But regardless, the program, only C++ only cares whether this evaluates to true or false, and it 50 00:03:33,430 --> 00:03:36,970 will run whatever you want in here, so it doesn't really matter what you type. 51 00:03:36,970 --> 00:03:39,900 It doesn't look at the logic behind this. 52 00:03:39,910 --> 00:03:44,110 It just prints it out so that can be flipped. 53 00:03:44,380 --> 00:03:51,490 You also know if you did not be one, you know, be one runs by itself because it's true, remember? 54 00:03:52,030 --> 00:03:55,060 But if we put not be one, it should. 55 00:03:57,790 --> 00:03:58,660 It should not run. 56 00:03:58,690 --> 00:04:02,710 So I'm going to save this file and run it in. 57 00:04:02,710 --> 00:04:08,080 Nothing prints out because not be one, be one is true and not true is false. 58 00:04:08,140 --> 00:04:11,770 So this although it's a false, it does not run the code. 59 00:04:11,770 --> 00:04:14,440 It just goes to here and then it finishes on this one. 60 00:04:17,040 --> 00:04:23,220 All right, so let's move on, we've already looked at not and the equal and the not equal. 61 00:04:24,970 --> 00:04:30,330 So I also let me let me do a couple more things, so you can also compare the true and false right, 62 00:04:30,340 --> 00:04:31,450 just like the logic. 63 00:04:32,350 --> 00:04:33,600 So I'd like to do that too. 64 00:04:33,610 --> 00:04:37,630 So if I say be one, not equal to be two. 65 00:04:39,170 --> 00:04:42,830 What do you think this you think this is going to print out or not? 66 00:04:43,100 --> 00:04:45,110 So think about what this evaluates doing here. 67 00:04:46,530 --> 00:04:47,750 I'll go ahead and say it. 68 00:04:50,090 --> 00:04:52,400 Oh, I'm here compiling and run it. 69 00:04:55,160 --> 00:04:58,580 So you notice that this prints out, not be one, is true. 70 00:04:59,610 --> 00:05:05,400 So we can change this to, like I just say, print stuff, so it's kind of arbitrary. 71 00:05:05,850 --> 00:05:07,350 So what do you think it printed out? 72 00:05:08,040 --> 00:05:10,710 Well, that's because b one is true. 73 00:05:11,280 --> 00:05:14,640 B two is false, and those two things are not equal, right? 74 00:05:14,640 --> 00:05:15,720 And they're not the same thing. 75 00:05:15,720 --> 00:05:18,600 So saying that true is not equal to false. 76 00:05:19,620 --> 00:05:23,010 If you were to, if you say that, that is a true statement. 77 00:05:23,640 --> 00:05:27,600 So since this whole statement is true, it will run whatever's in here. 78 00:05:30,470 --> 00:05:39,570 So same thing if you just said, you know, be one equals true, you know, be one is true. 79 00:05:39,590 --> 00:05:48,050 So if I save this campaign, let's save it, run it, save it, compile it, run it, print stuff. 80 00:05:48,830 --> 00:05:53,720 Actually, this is true because one stores the value true, and we're comparing it to true. 81 00:05:53,750 --> 00:05:55,150 So this whole statement is true. 82 00:05:55,160 --> 00:05:56,390 Therefore, it prints this. 83 00:05:58,240 --> 00:05:58,680 OK. 84 00:05:58,720 --> 00:06:04,900 So I think that's probably enough to explain the billions and these three that we want over here. 85 00:06:05,380 --> 00:06:08,060 Let's talk about these two in here. 86 00:06:08,080 --> 00:06:17,710 So this is back from the last lecture where we talked about or and and so this first one is two pipes. 87 00:06:19,150 --> 00:06:22,270 If you're going to find that on your keyboard, it's like a vertical line. 88 00:06:22,900 --> 00:06:23,290 It. 89 00:06:24,450 --> 00:06:25,210 Could be. 90 00:06:25,230 --> 00:06:27,420 I'm not really sure where it is on your keyboard. 91 00:06:27,570 --> 00:06:35,280 For me, it's kind of over on the buy the entire key kind of to the right and up from the spacebar. 92 00:06:37,800 --> 00:06:44,330 And then this double ampersand right here is four and so or. 93 00:06:45,270 --> 00:06:50,010 And these are the operators for those or operator and operator. 94 00:06:50,010 --> 00:06:52,620 And this is the logical or and logical end. 95 00:06:54,000 --> 00:06:55,800 So let's go ahead and mess around with these. 96 00:06:55,800 --> 00:06:58,530 We can make some bigger statements by using these. 97 00:06:58,890 --> 00:07:03,030 So if I was to say we'll start out with some easy ones, how about that though? 98 00:07:04,200 --> 00:07:07,770 So remember how or and work? 99 00:07:08,100 --> 00:07:13,950 So if I say be one or be two? 100 00:07:17,060 --> 00:07:19,730 What do you think this is going to evaluate to? 101 00:07:20,960 --> 00:07:23,270 So I go up a little bit things see what these are. 102 00:07:24,380 --> 00:07:30,250 Again, and then think back to the last lecture where we talked about and see if you can figure whether 103 00:07:30,250 --> 00:07:32,480 to figure out whether this is going to print or not. 104 00:07:33,650 --> 00:07:35,210 I'll go ahead and read it. 105 00:07:39,260 --> 00:07:41,060 OK, so it does print stuff. 106 00:07:42,510 --> 00:07:43,900 So why does it print stuff? 107 00:07:44,490 --> 00:07:51,180 Because for or that just means that either one of these have to be true for the whole statement to be 108 00:07:51,180 --> 00:07:51,570 true. 109 00:07:52,320 --> 00:07:53,970 So be one is true. 110 00:07:54,210 --> 00:08:01,710 So true or false is true because at least one of them is true. 111 00:08:03,120 --> 00:08:04,560 So what about an end? 112 00:08:08,280 --> 00:08:12,630 Let's go ahead and save this compile and run it. 113 00:08:13,290 --> 00:08:16,470 So you notice nothing prints out for the end, and why is that? 114 00:08:17,010 --> 00:08:23,760 That's because, like we said in the last lecture, for an end, both sides need to be true. 115 00:08:25,150 --> 00:08:26,990 I saw the way the and can be true. 116 00:08:27,970 --> 00:08:28,990 They both need to be true. 117 00:08:30,010 --> 00:08:37,180 So if I was to change this, for example, if I change, be one or worse, they change 118 00:08:40,120 --> 00:08:49,120 it to true and I say this pilot, run it and then you notice it prints because that's true and true. 119 00:08:50,680 --> 00:08:56,440 But I'm going to go back and put this back to false find another way that we could make a true statement 120 00:08:56,440 --> 00:08:56,710 here. 121 00:08:56,710 --> 00:09:02,860 But let's make it a little bit more complicated than just using only the Boolean and an Andre here. 122 00:09:04,120 --> 00:09:14,860 So if I say B one, which is true and then I say and and then I'm put some more parentheses here to 123 00:09:14,860 --> 00:09:26,260 kind of kind of a sub statement within here, and I'm going to say I one equals equals equals five. 124 00:09:27,670 --> 00:09:29,770 So let's think about this for a second. 125 00:09:29,800 --> 00:09:34,330 We did a little bit of stuff like this in the last lecture, but now we're doing an actual code. 126 00:09:34,340 --> 00:09:38,170 So think about what this whole thing evaluates to in here. 127 00:09:39,020 --> 00:09:45,070 Remember how we went over the truth tables and we were able to kind of break more complicated statements 128 00:09:45,070 --> 00:09:47,110 into pieces and solve them? 129 00:09:48,190 --> 00:09:49,340 So what you should do. 130 00:09:49,600 --> 00:09:54,910 Just like in math is go ahead and solve whatever is in the innermost like parentheses here first, so 131 00:09:55,750 --> 00:09:58,030 we'll go ahead and solve what's in the parentheses first. 132 00:09:58,180 --> 00:09:59,410 So what is this? 133 00:10:00,780 --> 00:10:04,600 I1 equals equals five I one is five, right? 134 00:10:04,620 --> 00:10:10,650 So this whole highlighted chunk here can be replaced in your mind when you're looking at it. 135 00:10:10,670 --> 00:10:14,570 Imagine this whole thing is just the word true because this is true, right? 136 00:10:15,630 --> 00:10:20,190 This over here is also true, so true and. 137 00:10:21,020 --> 00:10:23,660 True is true. 138 00:10:23,840 --> 00:10:25,040 So the whole thing is true. 139 00:10:25,070 --> 00:10:26,000 So it'll print stuff. 140 00:10:26,900 --> 00:10:28,430 So let's go ahead and test this theory. 141 00:10:33,760 --> 00:10:35,800 OK, and it does print stuff, right? 142 00:10:36,910 --> 00:10:40,810 So let's go ahead and change this, so what if I say I want to close too? 143 00:10:41,440 --> 00:10:42,820 Now what do you think's going to happen? 144 00:10:47,700 --> 00:10:50,940 So nothing prints, and that is because this is false, right? 145 00:10:51,090 --> 00:10:56,370 And if one side is false and this is false, true and false, it's not true. 146 00:10:56,580 --> 00:11:01,500 Both sides have to be true for that, for the end to be able to make it evaluate to true. 147 00:11:03,820 --> 00:11:05,860 So pretty cool, right? 148 00:11:06,250 --> 00:11:10,180 You can make some pretty complicated lines in here, if needed. 149 00:11:11,470 --> 00:11:14,500 So let's move on to the next one. 150 00:11:14,500 --> 00:11:24,190 So we have the OR and the and of course, you know, maybe practice a little bit too using the or so. 151 00:11:25,370 --> 00:11:27,770 Let's do like you can practice here. 152 00:11:27,950 --> 00:11:31,700 I don't know if I'll do more examples where you can mess around with stuff in here and make like another 153 00:11:31,700 --> 00:11:39,570 sub statement in here like I won and be to equal to. 154 00:11:39,590 --> 00:11:40,670 So it's like false. 155 00:11:40,670 --> 00:11:44,600 And then you could say b two equals. 156 00:11:45,790 --> 00:11:46,300 Like. 157 00:11:48,500 --> 00:11:52,400 B one or B two? 158 00:11:53,420 --> 00:12:00,500 Something like this, you know, doing a practice mess around with the or in the end and telling you 159 00:12:00,500 --> 00:12:10,910 feel pretty confident with those, but I'm going to move on to the next thing here and that is going 160 00:12:10,910 --> 00:12:11,810 to be the. 161 00:12:14,110 --> 00:12:15,940 Less than a greater than sign, so. 162 00:12:17,890 --> 00:12:19,210 And we have a greater than. 163 00:12:19,240 --> 00:12:24,340 So whatever is on the left to be greater than what's on the right, so let's go ahead and try that out. 164 00:12:25,180 --> 00:12:30,760 So if I say I to greater than I one. 165 00:12:32,380 --> 00:12:37,240 And this is really similar to math, so you've probably seen these symbols, you know, greater than 166 00:12:37,240 --> 00:12:41,060 less than greater than or equal to and less than or equal to. 167 00:12:42,830 --> 00:12:45,350 So I'm just going to roll through them just so you feel comfortable. 168 00:12:46,130 --> 00:12:52,790 So here we have I to Kate and I one well, I two is 10 right and 10 is greater than five, which is 169 00:12:52,790 --> 00:12:53,710 stored in won. 170 00:12:53,720 --> 00:12:54,680 So this should print. 171 00:12:59,350 --> 00:13:01,300 And it does so print stuff. 172 00:13:04,090 --> 00:13:09,040 So pretty cool if I go ahead and flip this and save it. 173 00:13:10,280 --> 00:13:10,590 Oops! 174 00:13:13,490 --> 00:13:17,840 You notice it doesn't print because I, too, is not less than I one indicator greater. 175 00:13:18,050 --> 00:13:21,140 So now I flip that sign doesn't work out. 176 00:13:22,310 --> 00:13:28,100 I can also say something like I could put another value in here. 177 00:13:29,710 --> 00:13:35,750 I three equals five and I could say, you know. 178 00:13:37,750 --> 00:13:44,770 I to greater than or equal to a three. 179 00:13:46,300 --> 00:13:54,790 So actually, this is I won, I won greater than or equal to I three, you know, five and five. 180 00:13:55,030 --> 00:13:56,230 So we on that. 181 00:13:59,570 --> 00:14:05,990 It prints stuff because i1 is equal to five, so I want is equal to three, they both have the value 182 00:14:06,010 --> 00:14:06,770 five storing them. 183 00:14:06,950 --> 00:14:09,050 And we said greater than or equal to. 184 00:14:11,470 --> 00:14:19,690 So this could actually be broken down, what's really happening here is something like I want you can 185 00:14:19,690 --> 00:14:25,030 rewrite this as I one greater than I should do this. 186 00:14:25,210 --> 00:14:36,730 I one greater than I three or I one equal to my three. 187 00:14:39,670 --> 00:14:45,850 So essentially, is that the greater than or equal to island, greater than or equal to its kind of 188 00:14:45,850 --> 00:14:47,920 can be broken down like this as well? 189 00:14:47,950 --> 00:14:57,310 So you're saying greater than is island greater than I three or I want, it's equal to three in which 190 00:14:57,310 --> 00:14:59,950 the latter would evaluate here to true, right? 191 00:15:00,400 --> 00:15:02,240 Because I want is equal to three. 192 00:15:03,070 --> 00:15:05,260 And this is false. 193 00:15:06,580 --> 00:15:10,540 Right, because I want to not canonize me, but the fact is, we have an orange here, remember just 194 00:15:10,540 --> 00:15:13,220 one of the side's needs to be true. 195 00:15:13,240 --> 00:15:14,560 So this whole thing is true. 196 00:15:14,560 --> 00:15:15,550 The right side is true. 197 00:15:15,550 --> 00:15:18,310 That means the whole thing evaluates to true. 198 00:15:19,000 --> 00:15:25,390 So when you're doing won greater than or equal to three, it's kind of the same thing, but more shorthand 199 00:15:25,390 --> 00:15:26,020 version of it. 200 00:15:29,350 --> 00:15:29,650 Cool. 201 00:15:29,680 --> 00:15:36,490 So I don't think that that needs to much more of an explanation, you can use this with a lot of things, 202 00:15:36,490 --> 00:15:37,720 a lot of data types. 203 00:15:40,480 --> 00:15:46,300 You can compare floats and doubles and even like charts and things like that. 204 00:15:46,690 --> 00:15:52,360 So if you remember back to the data type lecture, you remember that Charles also can be thought of 205 00:15:52,360 --> 00:15:56,910 in terms of their value, their decimal value and stuff like that. 206 00:15:56,920 --> 00:16:04,540 If you look back to that lecture, when Patricia talking about the ASCII table, the AC III table, 207 00:16:04,870 --> 00:16:10,750 you know, that means that you could compare charges as well as those have those decimal number representations 208 00:16:10,750 --> 00:16:12,070 as well and things like that. 209 00:16:13,690 --> 00:16:16,540 So I think that that is pretty covered. 210 00:16:16,930 --> 00:16:24,190 The next thing that I am going to do is talk about how we can do some extensions on this key word here. 211 00:16:24,200 --> 00:16:26,070 So we have an F.. 212 00:16:26,500 --> 00:16:30,430 But it's not limited to just using an F. 213 00:16:31,740 --> 00:16:38,940 And there is also something called else and also something called Elspeth. 214 00:16:40,020 --> 00:16:44,880 And so I'm going to start out with the ealth and see how we can use that in combination with this if. 215 00:16:46,040 --> 00:16:46,610 So. 216 00:16:47,920 --> 00:16:54,130 You could basically right two ifs here, like let's say that. 217 00:16:55,190 --> 00:16:56,390 You wanted. 218 00:16:57,810 --> 00:17:01,320 Let's say let's just pretend that only an air force exists. 219 00:17:01,350 --> 00:17:09,060 There is no else and elusive, and let's say I want to have something different if this is true. 220 00:17:11,760 --> 00:17:15,810 And then I want to have something else print if it's if it's false, right? 221 00:17:16,680 --> 00:17:17,220 So. 222 00:17:19,010 --> 00:17:27,350 Let's just change this in here to say I won greater than or equal to high three. 223 00:17:28,580 --> 00:17:29,480 So how about that? 224 00:17:30,230 --> 00:17:35,750 And then maybe I say, Oh, well, if that's if this is false. 225 00:17:37,620 --> 00:17:47,310 Then I would like to have it not print this, but instead print on, you know, I won. 226 00:17:50,790 --> 00:17:55,080 It's not greater than or equal to E3, something like that. 227 00:17:56,850 --> 00:17:59,240 So you're like, Oh, cool, I'll just put it afterwards, right? 228 00:17:59,250 --> 00:18:02,490 Because if this is false, then it will just go to here. 229 00:18:04,650 --> 00:18:07,650 But the problem is, is that this will run. 230 00:18:09,260 --> 00:18:10,130 Basically. 231 00:18:12,070 --> 00:18:19,190 This thing kind of runs like regardless of whether the condition is, you know. 232 00:18:20,340 --> 00:18:20,990 False. 233 00:18:21,060 --> 00:18:24,990 You know, it's still it's still going to run basically if if it's true, so. 234 00:18:25,280 --> 00:18:31,890 So like I one is greater than or equal to E3, so let's go ahead and run this. 235 00:18:37,470 --> 00:18:38,760 So I'm bringing this up. 236 00:18:40,420 --> 00:18:43,270 So we notice that it does, in fact, print. 237 00:18:44,350 --> 00:18:51,790 I won greater than or equal to three because it is great and it is greater than I thought, or so it 238 00:18:51,790 --> 00:18:55,760 is equal to I three, it's greater than or equal to on its equal to. 239 00:18:55,810 --> 00:18:56,440 So that works. 240 00:18:57,250 --> 00:19:03,160 But then it also runs Line 18, where we said I want is not greater than three. 241 00:19:03,160 --> 00:19:04,490 And that's that's not true, right? 242 00:19:04,510 --> 00:19:05,380 Why are we printing that? 243 00:19:05,380 --> 00:19:07,150 We shouldn't print that because it's true. 244 00:19:08,710 --> 00:19:10,540 We only want to print it if it was false. 245 00:19:10,540 --> 00:19:14,050 And you know, it's still rain. 246 00:19:14,050 --> 00:19:19,450 So we have to find a way to to get this to only run if this is false. 247 00:19:21,890 --> 00:19:30,260 And the way that we can do that is by using this else here and further else, you don't actually need 248 00:19:30,260 --> 00:19:33,680 a condition, you just put the brackets here. 249 00:19:35,210 --> 00:19:37,130 So like the curly braces. 250 00:19:37,850 --> 00:19:44,480 So I'm going to copy this and then delete it, and I'm actually going to put it inside of here. 251 00:19:45,950 --> 00:19:49,610 And remember, you don't have to indent it like I am here. 252 00:19:49,970 --> 00:19:54,230 You notice that there's an indentation here for the code that's inside of the curly braces. 253 00:19:54,740 --> 00:20:01,520 This is just kind of good code in practice to make it more readable since this thing lies inside of 254 00:20:01,520 --> 00:20:05,420 the F basically inside of these curly races. 255 00:20:05,960 --> 00:20:13,690 They are for the if that means that it's a good idea to make it look like it's inside. 256 00:20:13,700 --> 00:20:19,340 In the way to make it look like it's inside is too indented over so that for spaces or a tab. 257 00:20:21,520 --> 00:20:26,710 That's just that just makes it more readable, and in some other languages, this is necessary, it's 258 00:20:26,710 --> 00:20:30,970 like required, so it's kind of nice to just standardize it and. 259 00:20:32,580 --> 00:20:38,040 It'll be more appealing as people read your code and make more sense, you'll be able to look through 260 00:20:38,040 --> 00:20:38,640 it quicker. 261 00:20:39,150 --> 00:20:42,270 So kind of a good idea to make it look nice like this. 262 00:20:43,920 --> 00:20:50,220 So let's get back to the real point, which is that now this will only print. 263 00:20:51,370 --> 00:20:53,770 When this is evaluated to false. 264 00:20:55,270 --> 00:21:01,120 All right, so before this evaluated to True and it printed this, and then we just left this line right 265 00:21:01,120 --> 00:21:03,010 here on Line 18. 266 00:21:03,670 --> 00:21:05,830 And it printed two, which we don't want it to print. 267 00:21:05,830 --> 00:21:11,890 We only want it to print when this highlighted thing in here is false, whatever in between the parentheses. 268 00:21:12,870 --> 00:21:14,100 On the F is false. 269 00:21:16,250 --> 00:21:23,480 So, of course, if we run this again, it's just going to print, you know this, so let's go ahead 270 00:21:23,480 --> 00:21:25,040 and do that. 271 00:21:26,540 --> 00:21:28,600 So I'm going to compile it. 272 00:21:28,610 --> 00:21:29,600 I saved it already. 273 00:21:29,610 --> 00:21:30,350 I'm going to run it. 274 00:21:30,740 --> 00:21:33,020 And you notice now it only prints. 275 00:21:34,480 --> 00:21:41,990 You know, I won greater than or equal to three because it's true, but it doesn't print this other 276 00:21:41,990 --> 00:21:44,320 line that we have right here. 277 00:21:44,330 --> 00:21:47,990 When we you remember, we just used to have it like right here and in print, and now it doesn't.