a = (rand() % 3) - 1;

generates numbers in the range -1 to 1, is that what you intended?

Not sure what you're asking about the first code block.

In the second code block, lines 10 and 16 (where you set and output cosangle) need to be past line 46 (where dvaIndexLast = dvaIndex)

And...

At first glance, I thought the first code you posted showed the data going to two files at once (if i < 100), but then I noticed the else (on line 6 of the code below). As written, the first 100...

Ok, first, based on your answers to the questions, the file sizes represented do NOT warrant the work and/or effort to split the files up. In fact, if you're going to use this data for anything...

It would depend on how smart you want the computer to play. The smarter you want the computer to be, the more work it will be.

You will likely end up adding a function that will 'make a move' like...

I don't see any answers to the questions. I'll quote the questions again here, but I will not reply to this thread again unless you answer them:


Regarding your last post, did you even bother to...

You're iterating too far.

The element indexed by cnt wasn't fully read.

On Line 25 the loop limit should be i < cnt not i <= cnt

Ok, I was going to compare the strings, but I decided that was inefficient so I switched to integers.


// I'm using strings
#include <string>
// I'm using stringstreams
#include <sstream>
...

You appear to be having an extremely difficult time following what I thought were simple directions. I am apparently failing to communicate.

Let's get back to basics first.

Questions -- please...

First, let me repeat again, at the sizes you are currently configured for, breaking the output up into multiple files is unwarranted.

If we're only at the testing level now (with N at 100 and...

You need to seek before you read (saw you have that), but you need to seek to the same location before writing (by default, the act of reading moved the file pointer).

//Insde main:
else...

I thought I showed you what I recommended.

I thought I showed you that you could take the output out of the big loop.

The goal would be not to repeat the same code for as many times as you have...

I was thinking something like this, but I would much rather have seen you try something than just give it to you. Demonstrate effort, you get lots more help.


int nextindex = 0;
for (int ii = 1;...

I understood what you said you wanted to do.

Apparently you didn't understand what I was recommending.

Right now you have something like this:

ofstream ofile;
...

I think your problem is that you don't read the records from the file when you're making changes to them.

For example if the first thing I did after starting the program was to check-out or...

200 lines of code is not unreasonable to post, you should just have posted it in code tags. (There are lot of people that won't download code. I don't do it very often.)

The "vecA" files would be...

I wouldn't use multi-threading in this type of application.

You might look at using something from the _spawn family of functions using the _P_NOWAIT setting in place of your system() call. They...

I don't see anything obvious about the login...maybe you could describe the problem you're having better?

As not all of the code required to validate the login is shown, I'm presuming that all of...

Specific comments on your code posting:

You still have not added any debug prints to track your way through your program. From your comments about how your program runs, I'm presuming that you...

I have to agree with Dave...it almost looks like you aren't trying.

I took your last posted code and did the following:

modified it to support the number of grades you actually have
(Which...

There may be design issues here...

The base class can declare any function it likes as pure virtual, but all of the child classes must implement it using the same concrete argument list.

If...

I don't see anything obvious about why your code would just stop without exiting.

I guess your next step is to either run the program in the debugger (if you have one) or to add debug print...

So your array class is intended to transparently represent the result of possibly many allocations as a single array. Due to the HUGE size of the array, it is absolutely CRITICAL that the allocation...

If you don't have a compile error, you can add debug print statements (or run in a debugger) to determine how far into your program it gets.

I'd at least add a print before you read the id with...

I don't see much point in allocating all available memory unless you're trying to stress-test another application, and if you're stress testing, I'm not sure what the hurry is.

I'm pretty sure you...

if you're getting a compile error, would it trouble you too much to include the error?

If the data is large enough, I suppose it can take a while, but I've done some fairly large data sets and never really felt the need to 'speed up' allocation.

How much data are you allocating?
...

Unless I'm mistaken, your code won't compile.

The first problem is that the compiler doesn't like you to declare the size of an array at runtime, it wasn't to know how big the array will be at...

and you forgot the around your code so that it is highlighted and has line numbers.

(oops didn't see the previous post -- sorry)

Also, when posting your code for us to look at, please use code tags:


// Your code goes here


It makes the code MUCH easier to read. (There are several people that won't even look at your...

His line 12 should have been ++cnt;

Though I agree with a previous poster that you have 8 grades, and do not have an average or a letter grade in your input file, which makes his sample code...

Why don't you want the memory set to zero?

Are you trying to extract some 'previous' value from the memory?

The compiler requires that the 'interface' function1() declared in the base class have a concrete argument list.

What kind of abstraction do you think it needs?

Could that abstraction be...

The reason you lose the first character of the title is because the first loop is different from the second and third loop. Look at the difference yourself and see if you can figure it out. You're...

Templates require the users to see all of the member functions. You can't have the methods 'hidden' in a c++ file.

If the code creating the instance of the template doesn't "see" the method, the...

You're losing the first character of the full name inside the first for loop (of concat()). The second and third loops add each character to what was in fullname, but the first loop assigns each...

The basic code you were given declares the array and then passes it to the functions you are supposed to write.

Based on what you have there, I suspect you're supposed to write the two functions:

int empty_array_insert(int[], int);
void display_in_reverse(int[], int);

Assuming that your sort works...


if (n[0] == n[1] && n[3] == n[4] && (n[2] == n[1] || n[2] == n[3]))

I agree about the while in main, but were you trying to stop when the board was full?

You can't look at a single location to determine if the board is full.

Just another comment or two for...