>I was thinking stdin
The stream in question is whatever input stream you want to clean up in a line-oriented fashion, but yes, it was written with stdin in mind.

>Will it be something like this...

>So, in a nutshell, I'm looking for an alternate of the non-standard getch();
Unfortunately, you can't do it in one line without making some assumptions or rolling the whole thing up into a...

>I only posted because I agreed with the OP about our instructor.
>Then you proceed to call me a sock puppet...
Exactly. I call it like I see it, and if you have a problem with that, you're...

>Why even bother posting when someone is asking for help, you have a very poor attitude.
Pardon? You must have missed the fact that I was the first person to help Mattpd in this thread. You must...

>I can vouch for this guy
Yea, that's not suspicious at all. :icon_rolleyes: From past experience, I'm more inclined to believe that you're a sock puppet rather than a concerned classmate.

>Kindly let me know of alternatives of how I could solve this problem.
You're not actually appending to the file, you're appending to lines in the file, which amounts to inserting into the file....

>I am not certain where to start.
Then you should consider switching your major. "I don't know where to start" is equivalent to "I'm not cut out for programming".

>1. Write a C program that only...

>notice that the argv that i enter exists in the txt.....
Yes, but is it the same string you're comparing against? Remember that fgets does not strip the newline character. If you're comparing...

>if(strcmp(caracter,argv[1]))
strcmp returns a comparison, not a boolean. In other words, 0 is a match and non-zero is a failure to match. Thus, your if statement is reversed. You print the line...

>but many books have this specifier.
I hate to break it to you, but many books are written by people who know little more about C than you do. The lesson about %lf is that printf is not a mirror...

>If you expect your IDE to come fully featured then it won't be lightweight....
The very definition of IDE implies a text editor, a compiler, a debugger, and build tools. vim is a text editor, not...

>i read that the precision of float is 6 digits and double is 10.
No, the precision of float is FLT_DIG and double is DBL_DIG, where both of those macros are defined in <float.h>.

>but it is...

inline: Similar to C++'s inline keyword. It gives you the option of telling the compiler that you want inline expansion rather than real function object code. Inline functions are a safer and easier...

If you know how to use arrays, and you know how to use FILE pointers, you know how to use arrays of FILE pointers. There's really nothing tricky about it except for the number of files you can have...

Amazing. You took the time to add underscores so that your formatting wasn't lost and didn't bother to look for some kind of forum tag that would preserve it for you?

>PLEASE help pps!!
Here's a...

>I'm relatively comfortable with C++ and am taking a class in C for the
>first time. I'm finding it difficult and frustrating to adapt to the new
>language. It's kind of like trying to box with a...

>Wow! Didn't mean to tick you off lady
You didn't tick me off. Apparently you're not used to my direct style of help.

>Sorry if I offended you in any way.
The only thing that offends me is that...

>Well, as I said in my original post
Then you should name the function read_data_from_a_file_and_store_it_in_three_arrays rather than CompareIDs. I didn't ask you what your code does, I asked you...

That function is kind of scary. What exactly is it supposed to accomplish? I'm reasonably sure I can show you a better way to solve the problem.

>The code compiles though.
What you're seeing is a silent extension where the compiler treats the size of void as 1. GCC is wrong to allow it in pedantic mode as it's a constraint violation in the...

>You should perhaps try this:
>void* ptr=but_ptr+20;//this is good
Perhaps you should try it first. You have no excuse for giving an answer that will never compile on a conforming C compiler.
...

>but is there a equation to change the characters hex to decimal because
>sometimes if a string got F or A it will just change that to its ascii value.
There is a compact and easy way to do what...

Treat it as a variation of K&R's atoi. You should already know that you can step through the string and add the characters like so:

result = radix * result + digit;

If radix is 16, you're...

>As I can say "Build an operating system." is a single step
It is, but you have to increase the granularity of your steps to come up with reasonable milestones. I find it somewhat humorous that you...

>Enlighten me how?
Step 1: Fill the array using rand.
Step 2: Check for zero and if not present, add it to the end.
Step 3: Randomly shuffle the array.

Apparently you have an extremely limited...

>That can complicate things.
Duh. It is an extra step, after all. :icon_rolleyes: On the plus side it adds another level of randomness.

>For the 20th value, if a 0 was not generated, load
>a 0, otherwise get one more random number.
So if 0 was not generated, it'll always be the 20th value? I'd suggest a final step of randomly...

>when i tried aux=aux->prox
...aux becomes invalid because aux->prox is an uninitialized pointer. Any further use of aux, except to point it to another address, is doomed to failure.

>Who says using brackets is better?
A lot of people. It's recommended in all coding guidelines I've seen and required in the majority of them. The rationale is that if you add statements to a block...

>i am getting three answers for just one bit on
Can you give me an example? Most likely I'm testing your code based on how it's written, not how you seem to expect it to work. In other words, I...

Perhaps if you explained exactly what you were expecting and how what you got is different...

1) Functionally, in that situation, the two are the same. What you're seeing in the first example is C's comma operator in action. Occasionally you'll see people use it to avoid braces. Whether...

atoi either returns 0 or invokes undefined behavior. But you can't stop the undefined behavior without carefully validating the string before calling atoi. You also can't tell if the 0 is an error or...

>do a check to see if the variables exist in my main program
Just how do you plan on doing that? Are you also parsing the code of the main program? If not, do try to remember that variable names are...

Might I suggest "%ls" instead of "%s"?

>(*hPtr).style = "abc";
You don't copy arrays like this. You also don't compare arrays with the relational operators either. Further, at this point hPtr doesn't point to anything. You need to point...

>given a function, how do you tell the size of the array that is passed?
Given a function where the only parameter is a pointer to the first element of said array, you don't. There's no portable...

Meh, it's your call.

Let's start with some design decisions:

>void timestamp_string (char * myString)
The first thing I notice is the inconvenient notation caused by returning void. You can...

>le sigh.
:D

It seems you've suffered enough for that bit of code, so I'll restrain myself.

No, you're supposed to be making changes to the Time function, since that's where the error is and that's where your code is wrong. Allow me to be more hand holdey because you clearly don't get it....