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Print initialized formula

hi everybody it's doctor J again i'm here with Paul who's going to help me out today with so yes eres I had never go ahead alright hey everyone say whatever you anything else you want to say I want to talk about the weather it's been pretty terrible yes the weather is pretty bad right very bad I'd like to see the Sun I don't know if the Sun exist anymore I don't know I'm getting worried all right at least we didn't all blow away in the nor'-east yesterday that could have been worse all right so we've been looking at a raised with initialization lists every year rated we've looked at so far yesterday we looked at an array of string that we initialized to the days of the week sunday monday tuesday wednesday thursday friday saturday today in class we looked at an array of integers that you guys decided to use an initialization list to initialize to zero through nine and i asked you to write it out one to align and that looks like pretty much with this for loop is doing when we this for loop to me pull for for integer fanta i equals 0 i left at nine i plus plus that's how you read it pretty much and the loop body out see out see out a in a GFI minnnn l that's it you got it all right so now let's see it should be getting zero a.m. 0 should be the first one printed a 0 is 0 next time through the loop a 1 1 1 a of two or two right yes let's just see if that works will do compile and run alright that works just fine right yep ok now let's modify it extra cell are we're going to modify it by initializing instead of using an initialization list you have this guy's instead of using an initialization with we're going to use a for loop to modify to do the initialization a for loop right in the program so initialize put a little comment here initialize the list list is another name for an array right initialize your list too so that the zero element is 0 the one out the first element of the one element is 1 etc so that should be pretty straightforward right for ya let's use chain stead of I just to be different NJ equal to 0 we always begin at 0 because the subscript of the Arabians at 0 j strictly less than the length of the array the length of the array is let's make the link 10 instead of nine as I want to go 0 through 9 ok so let's make that list dimension 10 ok so now we have 10 elements i can go 0 through 9 which is corresponds to 10 elements so less than or equal to 9 i could say well I could say less than text less intense doesn't really matter and I do the same thing here j less than 10 j plus plus and now we do the initialization step which is nothing more than setting a of j equal to what just do sub script itself subscript itself so now it should be that a and 0 is 0 a 1 1 now nobody's home nobody's home I forgot to shut myself my my phone that's a terrible thing I'm going to shut it right now just in case a person that person decides to call me back maybe it's a persistent salesperson I hope not I hope not I'm going to block it as soon as I can and will block that number alright so let's run it right yep give it a shot compile and run that looks good yeah sure everything is cool why don't we make it a little buried a little bit and say how many elements of me read you wish to print so if they only wish to print five elements little pin 0 through 4 ok so let's ask uzhe to get involved a little bit so we initialized it but before we print it let's do another invariable whatever you want to call it the count emc all right said account will put a default count equal to 10 that would be the length of you right and now in fact I could have made this count if I wanted to be fancy ok usually we don't usually won't bother doing that but now you can do that all right so let's do let's do see out message to the user how many elements of the array do you wish to trade do you wish to print question and then we'll get the answer which would be the count right yes see mkay all right and I think we should stick with emblems otherwise we make this stuff right here alright so that men went in there and now instead of going all the way up to 10 we go instead up to count got a problem with this is what if you sent it's more than 10 then it's going to blow up right yes but we will try running it anyway see what happens I let's say to user enters five elements we should what do we expect to be to print out 024 correct and it that's exactly what happens we probably should skip a line because it looks funny so let's go and skip a line before we before we like this just to see out Emlyn best way to skip the line let's try running this again with a different number let's try running it with the max which is 10 and we get the same output as we had before now let's try running it incra with an incorrect number try 12 oh so did whatever garbage is in memory in the next 4 bytes x lo word of memory prints out yeah turns out it's negative something or other and the next integer after that is often so yeah so and this would be mighty confusing to users so I think we should do something about that okay yeah so we could if the user enters more than 10 just in touch how's that okay so let's not even warn them which is giving the max how many only wish and we could say in here max is 10 and it's not not care if they enter more max aids can put a little ! one axis k but if they don't listen no problem so if CNT is greater than 10 well we set it to 10 okay CNT equal to 10 and I I mean if you want to be excessive we could check that it's not less than zero and it did not hear or less but so now let's just leave this I think this is good enough let's try entering 12 now and see what happens perfect I don't get that cottage all right I thank you very much fall I think we're going to end you any questions on the peanut gallery you know what the peanut gallery is that's from Howdy Doody show you guys don't watch Howdy Doody anymore I use a large Howdy Doody yeah question with total of weekly the first floor loop is initializing the array what we did in the initialization list that we had originally where we set we said originally a of 10 equal to 0 comma 1 comma 2 comma 3 we don't have to do that anymore because that flow loop does it but it's only in cases when we have a formula in which to initialize can we use a for loop in this manner so we can't always use a for loop we can always use an initialization list however would you want to initialize an array from 0 to 99 item I sure wouldn't and we could do that without any problem right let's do that Paul let's hang in there another minute let's just change this to 99 yes no sweat 100 right and now we're initializing 0 to 99 hey oh yeah I have to change that thank you yeah all I don't know what I do without you so for n be fun ah don't say that Johnson and Jake was Eric a lesson 1 j plus plus h april jayy right yeah how many of the elements in wish to wish elements do you wish to print max is now not 10 but a hundred ok now let's run it told we have been up to changes to a very sharp all you're catching me on too many errors i don't like josh is showing me up are you showing me up now is you up I got another error yeah there's one oh I'm just gonna exit this thing I don't want to look I don't want to look foolish there's just I have to reset it to a hundred if you know anything else I do did wrong before I nothing else right now I'm things I hope alright let's try it so let's look let's print out twenty five elements that looks good let's print out a hundred elements oh I keep printing it out in a program okay let's just erase that I guess I'm like I said in the previous video I'm trigger-happy okay okay there we go I I could only assume that the first few are good i guess i could more than this show my could scroll up it looks good got it zero through 99 all right now let's see what happens if we put in a ridiculous number like a thousand we're still only going to get the first time so this is perfect any other question so it's not we're going to say we done fit with this for today ok we'll do another video tomorrow meanwhile we'll continue with some classwork thank you very much for thank you I