Posts by Ancient Dragon

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>No it isn't because void main() is not allowed by either C or C++ standards. It
>never was, and never will be. There are compilers that will not allow void main().
>The program returns an integer whether you want it to or not.
I was arguing the same with Narue and found out that this is not true for freestanding environment: http://web.archive.org/web/20050207005628/http://dev.unicals.com/papers/c89-draft.html#2.1.2.1

Those programs are written with embedded compilers, which do not compile with C standards. There are a whole host of exceptions to the standards for compilers that target embedded systems. AFAIK no one here at DaniWeb use such compilers. And here is one such compiler that does not fully conform to C standards, and their web site explains why.

>>is just as valid a program as
No it isn't because void main() is not allowed by either C or C++ standards. It never was, and never will be. There are compilers that will not allow void main(). The program returns an integer whether you want it to or not.

>>and you need to indicate, that's exactly what stderr is for.
Not really -- if your program is not called by another program then just sending an error message onto the screen might be sufficient. But many programs are launched by other programs -- on *nix machines there is a whole family of spawn functions, and on MS-Windows there is CreateProcess() and several others. Those program often wait for the spawned program to exit and then get its exit status. That will be broken when the spawned program just returns some random value from main().

The tiny programs you write in high school and college are not very significant and more than likely are never spawned by other programs. In those cases it doesn't really matter what you, the programmer, do. After you graduate and start working for software companies you will not be allowed to write programs as you see fit. You will be required to write programs according to company coding standards. Those coding standard will dictate how you code programs and in what format. They mey even tell you how to name variables, functions, c++ classes and a whole host of requirements.

If you only want it to do something every hour, then put it to sleep for an hour - this is MS-Windows, *nix would be sleep() with lower-case 's'.

while ( 1 )
{
    Sleep(60*60*1000); // sleep for one hour
    // stuff
}

Father, forgive him because he knows not what he is doing.

I know that could be done with Microsoft MFC. Probably even wxWindows. You might search www.codeproject.com to see if they have anything useful. I know they have a plotting program written if MFC.

The problem is that variable buffer disappears as soon as that function goes out of scope (returns) and the return value is an invalid pointer. Can't do that.

>> while ((pos < tope) && (strcmp(NombreBuscado, article[pos].name)!=0))

variable article is not an array. Change article[pos].name)!=0 to article.name)!=0

AD: *t = _totoupper(*s); I don't know that function, please tell me about it :P

See the link in my post #4

I already did suggest another solution -- and No you can not just simply remove the static keyword.

TCHAR*  MyToUpper(TCHAR *input, TCHAR* buffer) {     
  TCHAR *s = input;                
  TCHAR *t= buffer;               
                                   
  while (*s != '\0') {             
    *t = _totoupper(*s);           
    s++;
    t++;                           
  }     

  *t ='\0';
  return buffer;                   
}

>> *t = _toupper(*s);
You still didn't use the right function. Read my previous post

tux4life: That's a common problem with several standard C library functions, such as strtok() and localtime(). A better design is to have the calling function pass in a buffer for the destination string.

use _totupper(), which is portable between char* and wchar_t* Also, you need to null-terminate the string after that loop terminates.

ODBC is the oldest and most widely used database access method, it is supported by virtually all SQL databases. DAO and ADO are both slightly faster than ODBC but not as widely used except in Microsoft databases such as Microsoft SQL Server and MSAccess. Others might use it too, I don't know.

There is no such data type as "tchar". Do you mean TCHAR that is defined in tchar.h? If that is right, then TCHAR is defined as either char* or wchar_t*, depending on if the program is compiled for UNICODE or not.

And to answer your question, no that function will not work. What happens if the string contains characters other than 'a'-'z'? What you need to use is toupper() defined in ctype.,h

Yes I did mean strtok(), not strchr() :)

I understand what you mean now.

You mean like BoundsChecker ?

I have not been able to duplicate those warnings with my compiler.

I don't know why strtok() will not work for your program. Here is an example of its use

char iobuf[] = "Hello World";
char *ptr = strchr(iobuf, " ");
while( ptr != NULL)
{
     printf("%s\n", ptr);
     ptr = strchr( NULL, " ");
}

Note that you pass a pointer to a char array the first time, and NULL thereafter.

If the destination machine is MS-Windows system, then you could encrypt the password and store it in the registry.

you are getting that seg fault because
line 51: allocate memory to temp
line 52: toss the memory away and reset pointer to somewhere in base_string or NULL
line 65: returns a pointer to the pointer returned by line 52 + the length of char* delim, which could result in an out-of-bounds error. This final pointer can not be free'ed because it doesn't point to the same address that was returned by calloc() or malloc(). So the memory allocated on line 51 is unusable.

I gave you my advice and opinions -- take it or leave it, I don't care because its your buggy program not mine.

Why do you want to release something that belongs to the operating system? Programs don't normally have any control over paging system.

That would be the same code as a set() function. No point coding the same thing twice.

When you compile programs with Microsoft compilers in DEBUG mode the compiler will fill pointer addresses with that value 0xcdcdcdcd or some such value like that to indicate that address has not been used. if you code something like this char *ptr = 0; then the address will be 0x0000, as expected, but char* ptr the address is set to 0xcdcdcdcd.

If you are going to test the validity of that pointer, then declare it like this: GridGeneration *finalgrid = 0; or GridGeneration *finalgrid = NULL; , both are equivalent.

private:
	vector<short>& base_row;      
	vector< vector<short> >& base_mat;   // Where all the elements of matrix are located.

references have to be initialized in the class constructor. I suspect you do not want those to be references, so remove the & reference operator. for (vector<short>::iterator it_1d = base_row.begin(); it_1d<base_row.size(); it_1d++) That is the incorrect way to check for end-of-vector. Test the iterator against base_row.end(), not .size().

There are several other errors, but you should be able to correct those yourself.

nanchuangyeyu: One reason for all those errors is because you need using namespace std; before including matrix.h or add it inside matrix.h. In that header file you could also just specify std:: before any STL templates, such as std::vector<std::vector<int>>

the library must be like this:
#include <iostream.h>
all of the library should have a .h or header

I normally don't give negative rep, but I couldn't help myself this time because your post is 100% wrong. Only an ancient compiler would use c++ header files with .h extension.

I really love codeproject.com, if I need a code snippet or example program for MS-Windows that is the very first place I look., and I can usually find something that I can use. codeproject has the best online repository of MS-Windows programs/functions/libraries that I know of.

IMHO Digital Point sucks. I've browsed around there before and it seems to have a lot of spam in all its forums, and its moderators could care less. They will ban a user, including long-time posters, at the drop of the hat for the littlest infraction of their rules. One of their rules I do like -- no "me too" posts, they are deleted and posters infracted.

No special name for it -- its name can be almost anything. All it would do is change the value of a variable from one value to something else. And you can code a change method any way you want, or not at all. I normally do not include a change function -- just use the set function to change a value.

>>send(sock, bufEnviados,strlen(bufEnviados), 0 );

strlen() won't work on unicode strings. usel (wcslen(bufEnviados)+1) * sizeof(wchar_t) instead. wcslen() is declared in wchar.h -- I don't know if it is portable to all compilers or not.

Haven't seen any for what i want to do, moving my models with bones. Do you know of any?

BattlingMaxo

Sorry but I know virtually nothing about OpenGL.

I just found a situation where FF is worse then IE8 right here at DaniWeb. In one of the posts FF displays blank pages while IE8 the pages are ok. I think its a situation where FF takes longer then IE8 to render the page because FF takes several seconds to render the page correctly.

Repost anyway -- one misplaced semicolon will cause big problems.

Here is the function again

char * ustrtok(char *base_string,char *next_str,char *delim)
{
char *str2;
str2=(char*)malloc(100);
if(base_string==NULL && strlen(base_string)<1)
{
next_str=NULL;
return NULL;
}
int len=strlen(base_string);
char *temp;
temp=(char*)malloc(100);

temp=strstr(base_string,delim);
if(temp==NULL)
{
strcpy(next_str,base_string);
next_str[strlen(next_str)]='\0';
return NULL;
}
else
{
int sub_len=temp-base_string;
str2=(char*)malloc(100);
strncpy(str2,base_string,sub_len);
str2[strlen(str2)]='\0';
strcpy(next_str,str2);
return (temp+strlen(delim));
}
}

line 5: That line will cause a crash when base_string is NULL because the second part of that statement will call strlen() with a NULL pointer. Need to use the || operator, not &&.

line 7: that does nothing but set the local copy of the pointer to NULL. When the program returns that pointer disappears, and nothing at all happens to the pointer in the calling function. And even if it did work (which it doesn't) it would cause memory leaks in the calling function. This is one reason I said that pointer needs to be char** instead of char*.

line 14: memory leak because it discards the memory allocated in the previous line.

line 18: unnecessary and can be deleted because the previous line strcpy() will null-terminated the string.

line 24: another memory leak. It was already allocated on line 2.

line 28: another memory leak -- what happens to the memory allocated on line 24???

And in the places where this function is called, I don't see where the memory for that second parameter is ever free()'ed.

Unless of couse your writting portible (and standard) code that should run on any compiler/OS. :)

But that's rarely the case, especially with newbe programs. And IMHO its always a good idea to mention them in any case.

try the rename() function. i haven't tried it on the recycle bin so it might not work without changing the folder's permissions.

ustrtok() is broken pretty badly. memory leaks, using uninitialized char pointers, and the second parameter should be char**, not char*

That program has a considerable number of errors, bugs, buffer overruns, and memory leaks. I was finally able to get it to read the first file, after correcting all those many problems. (using VC++ 2008 Express on Vista).

I did not ask someone to write the code for me. I used the term "collaborate." I am wiling to do the "heavy lifting" but just needed guidance. Nonetheless, never mind. I will pursue a different route.

Respectfully

You have to know what it is that you want before anyone can help you. There are lots of sort algorithms and billions of things to sort. We obviously have no idea what it is that you want sorted.

>>Later I moved into a development gig and learned Visual C++ was not for me.

It takes some time to learn how to use that IDE and compiler. And its not a computer language, just a compiler. There are others, such as Code::Blocks.

>>How can I get me career 'back on track'?
You may or may not be off track. Just because you got one rejection doesn't mean you are off track. Did you meet the minimum qualifications the company wanted for that job? This is an employer's market right now -- too many people wanting not enough jobs so they can afford to pick and choose. You didn't mention your age or education, maybe you need to get back in school and get another degree. Also, maybe you will have to move somewhere else to get a job you want.

What other criteria could there possibly be? Sort algorithms are almost the same regardless of what is being sorted. Its the data swaps that are the main difference.

for(int run = 0; gamemenu != run;)
	{
		if(gamemenu == 1)
		{
			gamestart();
		}

That is an infinite loop because gamestart() never changes the value of gamemenu, nor does it really do anything at all.

There have been many major changes to MFC since that compiler was released. I started learning it by doing the Scribble Tutorial

That tutorial will not be useful on VC++ 2005/8 compilers.

Aren't there openGL tutorials you can use for animation?

Please attach the file -- not post it. To do that hit the "Go Advanced" butten, scroll down until you see "Manage Attachments" button. That will let you browse your computer file system for the file to upload. Attempting to recreate the file(s) from what you posted can cause a lot of errors.

post code -- that program works ok for me using vc++ 2008 express compiler. What compiler are you using?

>>Are you sure the Button is in CMainFrame?

Dialog projects do not have a CMainFrame class (assuming he created a dialog project, not SDI or MDI)

line 29: you are passing FileName array, which only contains the name entered from the keyboard on line 14. You need to pass filename which is formatted on line 19.

Do you really want all those commas in the filename?

That code then should look like this:

#include <fstream.h>
#include <iostream.h>
#include <stdio.h>
#include<conio.h>


int main()
{
    char FirstName[30], LastName[30];
    int Age;
    char FileName[255];
    char filename[30];
     cout << "\nEnter the name of the file you want to create: ";
    cin >> FileName;
    int a=1,b=2,c=3;
    
    sprintf(filename, "%s, %i., %i., %i.txt",  FileName, a,b,c);

    cout << "Enter First Name: ";
    cin >> FirstName;
    cout << "Enter Last Name:  ";
    cin >> LastName;
    cout << "Enter Age:        ";
    cin >> Age;


   
    ofstream Students(filename, ios::out);
    Students << FirstName << "\n" << LastName << "\n" << Age;

    cout << "\n\n";
    //}
    
    return 0;
}

a = GCD(n1,n2);
	b = GCD(n1,n2);

The values of a and b will be the same because the values of n1 and n2 do not change between the function calls. There is no point in calling GCD() twice with the same parameters.

Sorry i still can't print the values of a, b and c as part of the filename it saves the file with the user specified name but not the integers. Can you please comment on it.
Many thanks

Stop whining about it and post the code you tried. Do you really think we can see the code on your monitor :icon_eek:

>>In my post#1 every thing described properly.
Then why didn't your program like it?

I don't want to create the file myself, I want to use the one YOU created.