seanpm2001 / Learn-C

A repository for showcasing my knowledge of the C programming language, and continuing to learn the language.

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Learning C

2021 September 22nd Continue keyword pseudocode

Last night (2021 September 21st), I gave myself an ultimatum on programming practices, and the main goal was to get programming work done, and advance my knowledge of programming. I decided to practice learning C, as I want to focus primarily on C, Python, and C++ (probably not Java though, at least not at the moment) my knowledge of C partially went up today, and my familiarity with it grew. Syntax highlighting has always helped me. I started experimenting with the continue keyword, but I am currently only using it for pseudocode purposes, to illustrate what happens after an input is given in a part of the program. Here is an example:

int main(void) {
	printf("Hello");
	continue: { // Pseudocode here (3) and below
		printf(" World");
		break;
	}
}
return main();
goto 1;
return 0;
break;
exit;

Notice several other keywords being used. The goto line is just something I wanted to use, it is supposed to go to the first line. The return 0 is something I recently learned is common in C programs (I also learned something really funny last night, which is that semicolons can be used as tabs/indents, I have the meme on me, but I won't upload it here) the break; keyword is just a fancy element, I don't entirely know what it does, I assume it means to stop the current line. Finally, the exit keyword is supposed to exit the program, I have noted that it is a recognized word.

There is still lots to improve on. I have been separating WacOS projects into separate sub-projects today, starting with WacWrite, and ending with SirIsaacNewtonScript and SirIsaacNewtonOS. I may do more work on this tomorrow. The WacOS project is getting lots of work this month, especially on its project Wiki, which surpassed 100 pages today. I was going to spend less time on it today, but I really felt like working on it.

Hello World (C)

easy.

# include <stdio.h>

int main(void) {
	printf("Hello World");
}

The only part that was difficult was remembering the # include <stdio.h> line, which was the only piece of this sample I didn't write. Here is a copy of what I wrote:

int main(void) {
	printf("Hello World");
}

This section was last updated on 2021, Tuesday, October 5th at 12:19 am

Semicolons as indents (C)

I found a funny meme a few days ago about this, I will recreate it in my own way:

# include <stdio.h>
int main(void); {
;;;;printf("Look at my source code");
;;;;continue;{
;;;;;;;;printf("World");
;;;;;;;;printf("Purposefully mixed up and backwards\n");
;;;;;;;;printf("World Hello /':;|;:'\ Hello World\n");
;;;;;;;;break;
;;;;;;;;};
;;;;printf("Hello");
;;;;break;
};

Not the best meme, but it is the source of where I got this idea from.

This program has not been tested and may not be functional.

This section was last updated on 2021, Tuesday, October 5th at 12:19 am

Comments

Comments in C are very similar/identical to comments in various languages, including Java, C++, Rust, Kotlin, and more.

// This is a single line comment
/* This
is a multiline
comment */
/* Multi-line comments
* can also
* be written
* like this */

I have much more to list here, and much to learn.

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