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OK.

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So welcome back.

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In this video lecture, we will be going over how to set up a project in Sea Lion so we can do the same

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Hello World program.

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And I'll be showing you how to compile and run that from sea lions.

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So this is for people who have decided to download and use Sea Lion for the course, whether that be

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in addition to Visual Studio and or terminal.

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If you would like to use Sea Lion to write code, then I think it would be a good idea for you to watch

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this entire video to see how you can set up a project and get it running.

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I will also go over some of the basics of Sea Lion.

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Of course not covering everything because it is a very complex development environment with a lot of

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buttons and things and tools.

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But I'll be going over how to just write basic code, compile it and run it.

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All right.

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So with that, let's go ahead and open sea lion.

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So go to wherever your sea lion is and go ahead and click on it or double click on it, or just search

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it in here and click on it, whatever you need to do.

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So I'm going to open up sea lion.

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All right.

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So I already kind of made this hello world thing, but what I'm going to do is actually click new project.

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And what I want right now is a C++ executable later on, we might be new in C++ libraries and things

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like that.

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You can also have C programming language executables and libraries.

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See, I haven't talked about that at all, but it basically was a predecessor of C++, very similar

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to C++, but much less capability as far as, you know, modern programming and stuff like that.

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Still a great language still used, but not going to be talking a ton about it, maybe a little bit

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in the course embedded.

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And then you also even have like some web stuff here.

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So pretty cool.

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You noticed the sea lion has a lot of stuff.

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Just front end JavaScript library react.

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So it's pretty, pretty powerful already.

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You can see there's a lot going on here with Sea Lion.

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So I'm not going to call this untitled.

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I'm going to go over here and just call this hello world.

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I, Stuart, hello, underscore the score world, and then you can just click Create.

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We're going to use the C++ 14.

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You can go in here and use newer or earlier versions of C++, if you would like.

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I'm just going to stick with 14, though.

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All right, so let's check out what it brought up, so this is pretty funny, right?

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We didn't even need to type anything, and this is not related to the fact that I call it Hello World.

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I could call the file anything, and it's going to just make a hello world program for me, and it's

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already going to make a file for me called me and.

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So it's not.

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It's just like a coincidence.

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You know that I call the Hello World, and it also made a hell a whole program.

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So something I should say right now is that if you have not watched the Hello World video where I did

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it in voice code, go ahead and watch that because it's not only about voice code, it is about Hello

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World, and I talk a lot about the Hello World program.

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I do not go into great detail about each of these things, but I kind of say it in layman's terms and

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then tell you, Hey, look, there's a lot of code that just got dumped on us, but this is the minimum

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thing we need to do to make a program that kind of does something interesting at all in C++.

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So I'm not going to be going over this program today.

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This is just a video about sea lions.

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So if you haven't watched that video where it's about Hello World, but I do use Visual Visual Studio

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code, please go watch that.

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VIDEO So it wrote this whole program for us, which is pretty funny, but it just does this every time

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you make a new project.

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And then from here you can change things and add things if you want.

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One thing we did talk about in that previous video was that the main is a special function.

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This name right here for this function is special.

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It's kind of like the entry point to our program.

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So that's why it puts it here.

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It actually makes a file for you called ManeD CP.

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Hello World is actually the project folder.

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So we chose to call our project Hello World, and it made a folder inside of this location.

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You know, this personal projects thing I have here, so wherever you wanted to put that, you can make

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a directory or a folder and name it.

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And then inside of here, it made this main cup for you.

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So this is the C++.

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That we're going to compile into an executable, so we chose C++ executable as our project and it Seelye

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and said, OK, I'm going to make a directory called Hello World because that's what you wanted to name

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your project inside of there.

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I'm going to put a bunch of files and I'm going to put this main zip file.

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So what are these other bunch of files?

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These are things that you should not touch right now.

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OK, so do not touch anything in here, do not modify these.

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This is how Sea Lion is going to compile our program, so we are not we don't necessarily have to invoke

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them in GW compiler ourselves with that G Plus Plus command, although we can from Sea Lion and I will

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show you how to do that.

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But it is actually going to compile this for us, and it's actually referring to the compilation process

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as building.

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It's kind of a more broad term.

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What it does is it has some special files in here.

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Kind of most importantly, is this make file.

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And when it makes something, it builds it, which is like the compilation process.

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It takes it from our code and puts it into a form that the computer can understand that can be ran on

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the computer.

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So the way that we build it is to use this little hammer right here.

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If you just want to compile slash, build your code, then you would click this little hammer right

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here to run it.

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You click this play button right here says Run Hello World, except that it's not only running it,

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you don't have to click the hammer if you don't want to.

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You can just click this play button and it will build, slash, compile the program and then run it

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for you all in one.

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So this is if you just want to build it.

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This is to build it and run it all in one.

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And then this little bug right here is to debug, but we are not talking about debugging yet, that

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is something that we would talk about later in the course.

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Debugging is just when you are basically trying to solve some errors that you've noticed in your program.

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So if you have errors, an easy way to figure out how to fix those errors is to debug it.

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And Sea Lion has a tool called a debugger that helps you do that.

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So that's what this button is.

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If you want to debug, we'll get into that later.

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So just to kind of reiterate these files here, this see make list that Ti has stuff in it that helps

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Sea Lion compile your code, your C++ code, like in here, you know it'll have some executable and

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like the main zip file that we write in our code in.

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But this is stuff that you should not pay much too much attention to.

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Now we might modify it later, but right now we're not going to look at it and definitely do not try

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and modify these files right now.

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Inside of this, see, make, build, debug directory, just kind of leave those alone.

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This is where we're writing our code, it is in the file that has the CBP extension.

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And if we wanted to, we could make a lot more files in here that were not CPB files or other extensions.

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Like I mentioned, C++ has some other file extensions that we will be looking at in the near future.

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So with that already done for us, let's just go ahead and build and run our programs so I can just

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come over here and click this play.

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And there we go, it prints Hello World to the console, except this time unlike in vs code.

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It is just printing it to an area right here.

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This is not a terminal like in vs code.

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In the code, we had a similar little box down at the bottom here, remember, except it was an instance

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of PowerShell, which was like a terminal or a command line.

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Kind of like this.

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The command prompt, except it was using PowerShell.

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And we were able to compile it in there ourselves with G Plus Plus and then run it.

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Instead, sea lion is just putting the output right here in vs code, we we compiled it and ran it in

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that terminal, and then we saw a similar line print out right in the terminal that said, Hello world

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here, it's just printing out to this box.

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This is not a terminal right now.

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Except if I wanted a terminal, I could have a terminal you see down here.

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It says Terminal.

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So I can actually go to this terminal and what I can do is actually navigate to the executable file

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that was created from the compilation process of this Code C line, compile this and made an executable

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and it ran it automatically for us.

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The executable is inside of here.

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Hello, world dot e e the dot Ekeus stands for executable like we were kind of talking about before,

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so I said not to touch any of these other files in here, but we can run this executable from this terminal

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if we would like.

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So since we're not in PowerShell or bash, uh, if you are in bash in here, like let's say you're running

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this on like.

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Linux, or if you have a terminal that is similar like on Mac in here and Sea Lion, then you can just

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do less, but it's not going to recognize that command here since we're just in the normal Windows Command

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prompt like similar to this.

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So I'm going to have to do dir instead of else.

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It's pretty much the same command.

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And then I see all this stuff in here.

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I see CMake build debug.

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I see, you know, see make list text t.

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So see, build, debug.

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That's where this file is.

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Notice that this is this folder here.

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See Makbul debug inside of it is all this stuff.

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So this executable lies inside this CMake build debug.

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So what I'm going to do is I'm going to change directory with that CD command and I'm going to go into

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C make build debug.

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So now I change directory into C, make Bill, debug the code command I can do dir and you notice now

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what I do there, and it lists all of the stuff inside of it.

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I see this hello world right here.

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So similar to what we did in the video with the code when we were navigating around into the directory

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and then we ran it.

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We can now run this file from here so I can do a dot and then a slash and then Hello world, and I'm

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not going to do CVP.

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I'm going to do XY.

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And I press enter and there we go.

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It's similar to kind of what we saw in vs code now we have a terminal down here where a command prompt

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we ran our executable and it printed it here.

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To the console in the terminal.

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So another thing that we could do is we could compile it on our own, actually, if we wanted to.

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So we would be able to go back.

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So it's already been compiled and it created this executable, but I can actually go back to where I

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was and to do that, I don't know if I've introduced this command yet.

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But rather than changing directory into a folder that is inside of where we are, we can go backwards

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by doing CD Dot Dot.

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The first dot is standing for the current directory, right?

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That's what we used right here.

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Kind of.

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This is this dot slash is kind of to run this, but the Dot signifies current directory.

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If I do it again, it basically tells me to go backwards.

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So now you notice that I'm not in make bill debug.

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I mean, I went one step backwards to here now to Hello World.

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So now I'm at this level, I was in this level.

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So this was everything in this dropdown was where I was now.

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I close this, now I'm in this level.

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All right.

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I'm in the Hello World directory, so I have access to all this stuff.

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So may not CP is in here, right?

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So if we if I want to, I could now use that G Plus Plus command that we've used before to compile it

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in here.

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So I could do G Plus Plus and mean CP.

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And so think to yourself, try and remember what is going to happen after I run this.

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What will the name of the executable be?

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Do you remember what the default name is?

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If I just compile a program and I don't do that thing that we mentioned with the Dash?

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Oh, to name the output file.

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So let's go ahead and run this, and since we're not in PowerShell or bash instead of else, we're going

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to do, do you notice now we get in a.

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So remember that is the default naming convention for it.

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It's going to call it a taxi or a port, something else, depending on the operating system you're on.

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So it might be like A. out or something like that.

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So now we can go ahead and run that ad XY because it's just like that.

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Hello, world.

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So let's go ahead and run that.

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I'm going to do dot slash x XY and we notice it's the same thing.

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It prints out Hello world for us.

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So I can also invoke Bash from here, so it would be similar to like Linux.

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I told you kind of earlier I mentioned that I have something called WCL, which is Windows Subsystem

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for Linux.

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If you really would like to put that, get that running on Windows, you can go online and kind of follow

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tutorials.

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It's kind of in-depth.

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I'm not going to add that because I don't have time to add so many things to this course.

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One is focused on programming, but you can go ahead and look that up and follow that process if you

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would like to have a kind of instance of Linux running on your computer.

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And so when I type bash, it puts me into this bash shell here, similar to how I could do in my normal

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command prompt like this.

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So from here, I can actually, you know, do else instead of there, and I'm actually going to remove

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that ACORN XY file now because I don't want that there anymore.

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So now I'm going to go back to the normal console, which is this run right here.

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This is where I said, Hello, world.

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You know, of course, I can build it and run it again.

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It'll say the same thing, similar to inverse code that we code tutorial with the Hello World tutorial

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that that that was based on the Hello World tutorial.

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I could change this text just like I did in that video and just say, you know, Hello, Dylan, and

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I can run this again.

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And now it says hello, Dylan.

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Instead.

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OK, so that is the end of this video.

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I just wanted to kind of point out how to do this and sea lion in the next video, I will be going over

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how to open them in the terminal and then compile it there.

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It will probably be quite familiar because we're just going to be using that G Plus Plus command terminal,

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but I'm going to also try and do it on Mac.

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So I can kind of show you Mac users really like what it's going to be like when you're compiling on

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there and also explain about the compiler for Mac because.

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It comes with the Clang compiler, I believe, so we don't need to install it like we do with many GW.

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All right, so that's pretty much it.

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One last thing is if you're worried about whether it's saved or not, auto saves, I believe quite often,

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but you can go to file save all and that will save everything here.

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So that is the end of this video, and I will see you in the next lecture.