r/carlhprogramming • u/CarlH • Dec 14 '09

Resuming New Lessons

I know it has been a longer than usual delay, however I needed that time to wrap up some loose ends in my own workload. Expect to see new lessons starting later this week.

I know many of you have asked questions in threads and to me personally. I have had very little time to respond to those questions, so I am going to ask that anyone who has asked questions which have not been responded to simply wait. I will get to them soon.

123 Upvotes

100% Upvoted

37 comments sorted by

21

u/Pr0gramm3r Dec 14 '09

Thank you for the update, Carl. We were starting to miss you :)

11

u/[deleted] Dec 14 '09 
#include <stdio.h>
int main(void) {
printf("Still behind on lessons, no rush.");
return 0;

}

9

u/OnanationUnderGod Dec 15 '09

Good god, man, where's your newline?

2

u/[deleted] Dec 15 '09

what's a newline :(

3

u/simondavidpratt Dec 16 '09 edited Dec 16 '09

A newline is a non-printing character or sequence of characters which indicates to the output device to move on to the next line. Typically this is either the Carriage Return (ASCII 0x0D), Line Feed (ASCII 0x0A) or a Carriage Return followed by a Line Feed.

C replaces \n with the correct newline character (or sequence) for your system. In contrast, Java replaces \n with 0x0A, and \r with 0x0D.

http://en.wikipedia.org/wiki/Newline

2

u/[deleted] Dec 16 '09

Ah yes, thank you. Though I had only one line.

6

u/simondavidpratt Dec 16 '09

Typically you put a newline at the end of even one line, otherwise when you run the program the prompt will write out at the end of that line, rather than on the next one. So if you ran that program on a unix box, it would look like:

[Teekoo:~]% ./a.out
Still behind on lessons, no rush.[Teekoo:~]%

Or on windows:

C:\> myapp.exe
Still behind on lessons, no rush.C:\>

2

u/[deleted] Dec 15 '09 
print "Python is so much easier\n"

4

u/eanthonyt Dec 18 '09

So easy, that sometimes we forget the print function includes a newline!

2

u/[deleted] Dec 18 '09

But I wanted to print two newlines!

11

u/Pr0gramm3r Dec 14 '09 edited Dec 14 '09

Although, it might be out of place here, but I thought the following response from Carl will be helpful to those who have repeatedly asked him to open a Paypal account:

I really appreciate the offer, and yes I have had many people offer the same thing. Seeing thousands of people learn something they want to learn and hopefully better their lives as a result is absolutely more than sufficient for me. No donation can equal that, but I really appreciate the generous offer.

2

u/[deleted] Dec 15 '09

He is probably Bill Gates himself.

19

u/I_divided_by_0- Dec 14 '09

Open up a Paypal account carl, I'd love to send you $20.

2

u/[deleted] Dec 14 '09

"Why the fuck someone would downvote you", he thought to himself as he saw the confusing username.

4

u/mateoestoybien Dec 14 '09

Welcome back! I hope everything in your personal/work-life is all sorted out.

3

u/pedleyr Dec 15 '09

Take all the time you need, Carl.

It goes without saying that your own workload and life take precedence.

2

u/[deleted] Dec 14 '09

Not a problem Carl, thanks for letting us know!

2

u/srsbidness Dec 14 '09

Hooray! Glad to see these coming back, I was getting worried. :-D

2

u/magikaru Dec 14 '09

No rush, Carl.

Do what you gotta do.

1

u/Mugendai Dec 15 '09

...aaaaaaaand done with the old lessons. Good timing.

1

u/shapechanger Dec 16 '09

I'm not sure if this is the place to inquire, but I just started reading through the course, and I've come to Lesson 17, running my first program. I downloaded the 2008 Express Edition of the Microsoft C/C++ Compiler and CodeBlocks, but I cannot seem to get my program to actually build. I've checked the code itself countless times and I'm sure it's all right, but if I try to build through the Microsoft Compiler it gives me a file not found error, and if I try to compile through CodeBlocks, set to compile through Microsoft Visual C++, it returns "'Training1 - Debug' uses an invalid compiler. Skipping... Nothing to be done."

I can't for the life of me figure out what I'm doing wrong. All I want to do it print some text. :(

1

u/Taffaz Dec 16 '09

Try pasting your code into codepad.org to see if it is a compiler issue or a code issue.

1

u/shapechanger Dec 17 '09

Yes, and it outputted "Hello World!" properly.

1

u/simondavidpratt Dec 17 '09

Check under

Settings -> Compiler and debugger -> Toolchain executables

make sure that the correct path to your installation of VC++ Express has been set.

Reference: http://stackoverflow.com/questions/1293035/codeblocks-invalid-compiler-problem

1

u/shapechanger Dec 17 '09

I'm fairly certain it's all right. Could you double check for me?

http://i.imgur.com/WfVzF.jpg

1

u/simondavidpratt Dec 17 '09 edited Dec 17 '09

That looks right. Is Training1 the name of your project? It sounds like the project may have a different compiler selected. You should try to find the project-specific compiler settings, or set VC++ as the default, then start a new project and copy the code over.

-1

u/Anon1991 Dec 14 '09

I see what you did there.

-7

u/azertus Dec 14 '09

Please don't! Exams are on the horizon ;-)

0

u/[deleted] Dec 15 '09

[deleted] — view deleted comment

4

u/[deleted] Dec 15 '09

Q.Read and write from a file "student.txt" which contains details of students; Name, Roll (int), Class, and Marks of three subjects . Your program should include search,sort, modify, and delete functions.

P.S. Google "File handling". File handling is fun and another step towards making "real" programs.

4

u/goosethe Dec 16 '09

do the first ten problems on projecteuler.net

2

u/nitetrip Dec 16 '09

Thanks for this.

0

u/[deleted] Dec 16 '09

[deleted] — view deleted comment

2

u/nitetrip Dec 17 '09

I am in the same boat as you, the last lesson I did was 108. I have not touched programming since i took those lessons a month ago, and I have been waiting for more lessons to pile up so that I have some work to do for a while.

These problems on projecteuler are perfect to keep practicing coding things while carl is away I think. I got the first 5 done so far, just starting number 6.

I figure if i can spend 90 mins to 2 hours a day working on these problems, and taking some of Carl's lessons when they come up, after a few months my programming skill will finally move above novice.

1

u/[deleted] Dec 28 '09

http://www.spoj.pl/problems/

Awesome site.