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And I have another strange problem with the debugger and CodeBlocks: I put a breakpoint, press F8 but it doesn't stop there, breakpoints don't have any effect. Neither does the 'Run to cursor'...

I see the error now, thanks for help.





This is not the final and complete version of the program. I cut some functions and parts so it wouldn't be too long.

I've just learned to allocate memory dynamically and I got in trouble with a program.
Here is my program:



#include <fstream>
using namespace std;


struct soldatti {

And wouldn't that do the same job? Instead of verifying every number it first verifies the numbers divisible by two and then the rest of them, it would take the same time.

Okay, now I tried to test the primes method, but since the limit is 2 billion it generated a file of about 3 megabytes before I forced stopped it after like 3 minutes (it was taking too long) and the...

This is a really big problem, how do I find the last digit of n at the n-th power?

I did some experiments and this is what I discovered:
Last digit of 1^4=1
Last digit of 2^4=6
Last digit of...

I did that before sending the source to infoarena.ro, and it fails 3 tests out of 10 because it takes too long.
I need one small improvement, that's all.


And by the way, it needs to calculate...

Bad idea. I'm limited to 650k of RAM and .1 seconds.
And the restrictions:
* 1 ≤ a ≤ b ≤ 2000000000.
* 0 ≤ b - a ≤ 20000.
So yes, it would take hours to get all prime numbers smaller than...

That isn't a very good idea either. Reading from files also takes long time, and it's an online competition where I upload the source code and it automatically compiles it and gives the result, it's...

The program works, but it's just too slow.
Is there any way I can make it faster?

How to calculate the number of divisors of a number?

The classic algorithm:


for (int i=1;i<n;i++) //or anything similar
if (n&#37;d==0) no++;

is way too slow.

Okay I found the issue, it was with the checkocasions(&x, &y) function, I accidentally reversed the x with the y axis at the second diagonal axis, now I reversed that and it works. Now let's see who...

I have recently built this game TicTacToe, but I get some bugs with the AI, maybe you can help me.

Here is the source code:

#include <iostream>
#include <stdlib.h>

using namespace std;
...

Thanks, but this doesn't work in my compiler, it says "Syntax error" at the lines where is declared "bool ...".

Now I have a question... will console programs made in MS Visual Studio (2005) work...

I now see that I said the wrong thing :D. It doesn't need 'using namespace std;' at the beginning of the program or 'std::' to access functions. What it doesn't have is 'vector', 'string' and other...

Than how do I do that? I don't really know how to allocate memory, i know very few information about pointers.
How do I know how much memory will this string need?

It did grow with 1 byte, but not any more since it first writes and then reads, so it dumps the extra byte .

I found this information in several programming books.
Anyway, how do I make this thing work?

Declaring 'string' variables in BC3.1 is not supported. I can only use char arrays.
And char* behaves (or at least should) like a string, and unlike arrays should have a big number of characters,...

Well, this is the copyfile function:

//COPYFILE FUNCTION
//=================
// - Copies a file from the source location to the destination in binary mode

int copyfile(char source[], char...

Yes, I'm stuck with it. I tried others, but the applications were not working under DOS, only under Windows.

I'm using Borland C++ for DOS 3.1, and lately I have been having some weird problems with strings. For example, I have a function that copies a file binary

int copyfile(char source[], char...

Nope, BC 3.1 does not support std:: functions, and "vector" does not exist.

How do I do that?
Note that I'm using Borland C++ 3.0 (for DOS) and not MS Visual Studio.

Hillsong - Where we belong