Posts by programmersbook

You welcome

You have to initilialize the FOO in constructor, FOO is a reference and has to initialize in contructor

class baz
{
  private:
  int foo;

  public:
  const int & FOO;
  baz() : FOO(foo) {} // constructor
 ~baz(){ } // destructor

};

Hi,

line 19 prototype, return type is char, line 172 implementation no return type.

Changed it to return type char and everybody will be happy :)

hmm, it compiles without problems with gcc.

How do you compile it?

Line 39 you should type cast:

median = (element[(int)(nep/2)] + element[(int)(nep/2-1)]) / 2;

Some things got messed up it should be like this:

main.cpp

//file1.cpp
#include<iostream>
#include"file3.h"

using std::cout;
using std::cin;

namespace baz
{
    extern MyClass foobar;
}

int main()
{
    baz::foobar.setFOO();
    
    baz::foobar.bar();
    cout << *baz::foobar.FOO << "\n";
    
    cin.ignore();
    
    return 0;
}

//file3.h

namespace baz{

class MyClass
{
      private:
      int foo;
      
      public:      
      void bar(void);
      void setFOO(void);
      int * FOO;
};

}

//file2.c

#include"file3.h"

namespace baz
{
    MyClass foobar;

    void MyClass::bar(void)
    {
         foo = 42;
    }

    void MyClass::setFOO(void)
    {
         FOO = &foo;     
    }

}

Hi,

which compilation error do you get?

HI,

first of all, it's not a good idea to store the mail plain, better generate a crypt key, and same the email on your side with the key.

Anyway it would be like this:

<form method="post" action="formposting.php">
<input type="text" name= "title" size="22">
<input type="text" name= "email" size="22">
<?php 

if(!$_COOKIE['cookname']) {

 echo "<input type=\"checkbox\" name=\"remember\" id=\"remember\" value="<?php if($_COOKIE[$cookname]) print $_COOKIE[$cookname];  ?>"/> Remember me on this computer"; 
} 

else{
echo $email; 
echo "Forget Me{delete cookie//help here too}";
} 
?>
</div>
<input type="submit" value="post"/>
</form>


if (isset($_POST['remember'])) {
	parse_str($_COOKIE[$cookname]);
	$number_of_days = 100000 ;
	$date_of_expiry = time() + 60 * 60 * 24 * $number_of_days ;
	setcookie( "cookname", $_POST['remember'], $date_of_expiry, "/", "url.com" );  
}

Line 24.25. is kind of the same?

I you pop you need to release memory and check if you are and the end or will will get an segv. And if you are in C++ a class would just cool.

line 6: should be:

void merge(char[],int, char[], int,char[],int*);

better:

void merge(char[],int, char[], int,char[],int&);

//----------merging-----------
void merge (char array1[],int size1, char array2[],int size2, char c[],int &size )
{
     for (int k=0;k< size1;k++)
     {
         c [k] =array1[k];
         }
         for (int k=0;k<size2;k++)
         {
             c [size1+k] = array2[k];
             
             size=size1+size2;
             }
             
}

Did you look at c++ algorithm like merge?

Hi!

Can you be more specific?

Hi!

ftp.sendcmd is only for FTP commands. Google gave me this: http://commandline.org.uk/python/sftp-python-really-simple-ssh/

how about:

struct movieData
{
	std::string title;
	std::string director;
	int year;
	int time;
};

Hi,

first of all storing a BLOB is very bad design.

But, it would be like this:

blob_value = open('image.jpg', 'rb').read()
sql = 'INSERT INTO Tab1(blob_field) VALUES(%s)'
args = (blob_value, )

cursor.execute (sql, args)
connection.commit()

did you try:

fourMatrix::fourMatrix(fourVector a, fourVector b, fourVector c, fourVector d): i(a),j(b),k(c),l(d){
      }

else the compiler takes "i" as local variable

or use:

class fourMatrix{
public:
	fourVector m_i,m_j,m_k,m_l;

...
}

then you see is a class attribute

fourMatrix::fourMatrix(fourVector i, fourVector j, fourVector k, fourVector l): m_i(i), m_j(j), m_k(k), m_l(l){
      }

did you try:

fstream file;
 file.open("Tbl_cliente.txt", ios::in); // open a file for input
 file.unsetf(ios::skipws);

getline(file, Cli_nombre, '#');
getline(file, Cli_apellido, '#');
getline(file, Cli_dirr, '#');
getline(file, Cli_total_compras, '#');
getline(file, Cli_balance, '#');

i see, well when i will do it like this:

void check_name()
{   name *strt;
    strt = start_ptr;
    cout << endl;
          
          for (name * strt = start_ptr;strt->nxt !=NULL;strt=strt->nxt)
          {      
          
            if (enter_name == strt->boy_name )
            {
                cout << enter_name << " is ranked #" << strt->rank;
                cout << " in popularity among boys.\n" << endl;
                break;
            }
            else if (enter_name == strt->girl_name) 
            {
                 cout << enter_name << " is ranked #" << strt->rank;
                cout << " in popularity among boys.\n" << endl;
                 break;
                              
            }
          }
    cout << enter_name << " is not ranked among the";
      cout << " top 1000 names." << endl;
}

call check_name() after add_names();

Full code:

#include <iostream>
#include <cstdlib>
#include <fstream>

using namespace std;

struct name
       { int rank;
         string boy_name;
         string girl_name;
         name *nxt;
         };
         
name *start_ptr = NULL;
name *current;

void add_names();
void check_name();

string enter_name;

int main()
{
    start_ptr = new name;
    cout << "Please enter a first name to see its ranking" << endl;
    cout << "among the top 1000 baby names." << endl;
    cin >> enter_name;
    cout << endl;
    add_names();
    check_name();
    
    system("PAUSE");
    return 0;
}

    

void add_names()
{   //name *temp, *temp2;
    //temp = new name;
    name * prior = new name;// * temp;
    int ranking;
    //int i=0;
    string male_name, female_name;
    ifstream in_stream("babynames2004.txt");
    
    //in_stream.open; //opens and loads names & ranks from file
    if (in_stream.fail())
   {
    cout << "File failed to open." << endl;
    cout << "Program will now close." << endl;
    system("PAUSE");
    exit(0);
   }
    
    in_stream >> ranking>> male_name >> …

i would do it like this: http://clipboard.it/v/z2b/ no pointers, better to understand.

Hi!

Sorry the http://www.cs.nccu.edu/~gmilledge/co...ynames2004.txt doesnt work.

I think you should use std::list, and no pointers if it's not neccessary! It will make your wile easier ;)

strcpy(can->name, ch );

better use std::string.

gcc doesn't complain, hmm.

it's looks like Splint has a problem.

did you try:

int r = scanf("%f%f", &height, &weight);

float bmi = (float)weight/(height*height);

he doesn't like:

vector<int[3]> resolutions;

should be:

vector<int> resolutions;

if you need an array:

vector<list<int>> resolutions;

did you try:

typedef struct DISPLAY_DEVICE_CAPABILITIES{
	vector<int[3]> resolutions;
	int brightness;
}DISPLAY_DEVICE_CAPABILITIES;

You should type cast it:

float bmi =(float) (weight/(height*height));

http://clipboard.it/v/23/

You welcome!

if you have it like this:

void *ptr;

and give it to send, send will complain, because behind ptr is no memory allocated!

did you try:

int i=0;
int ch=recv(new_socket,(void*)&i,sizeof(int),0);
printf("Value of a is :%d\n", i);

The keys are unique, if the key is already present he will be updated.

Use multimap to insert each time a new value.

how are the permissions set?

is -Index active? How the cfg looks like?

the better question is, why it crashes? What is the real reason?

why not like this:

#include <iostream>
#include <string>

class A{
 std::string s;
 public:
  A(){ s = "1234567"; }
  char operator []( const int index ){ return s.at(index); }
};

int main (int argc, char const* argv[])
{
    A a;
    std::cout << a[0] << std::endl;
    return 0;
}

I'm sorry

iter->first.first;
      iter->first.second;

you need to type cast it:

const int** constPtr2=(const int**)ptr2;

here you go:

iter->first->first; 
iter->first->second;

better have the send only once:

when it's almost DRY ;)

//read file and send
	if (myfile.is_open()) //if the file is open
	{	
		ss << "HTTP/1.0 200 OK \r\n\r\n";
		while (getline(myfile, line))
		{			
			ss << line;
			ss << "\n";
		}
	} 
    else{
		ss << "HTTP/1.0 404 FILE NOT FOUND \r\n\r\n";
	}
	
	nbytes=send(newsockfd, ss.str().c_str(), ss.str().size(), 0);
	
	if(nbytes < 0) {
	    perror("send error");	
	    exit(1);
	}

Correct me if I'm wrong, but shouldn't you first accept incoming connection and this connection put into epoll? Epoll will tell when the socket is ready to read or write.

As far as i see, epoll_wait is to early...

After bind you should accept.

Does the function "setFirstName" take the parameter as reference?

and to make it more smooth

instread of:

strcat(strfinal, "HTTP/1.0 200 OK \r\n\r\n");
	if (myfile.is_open()) //if the file is open
	{
		while (! myfile.eof() ) //while the end of file is NOT reached
		{
			getline (myfile,line);
			cout << line << endl;
			strcat(strfinal, line);
		}
	}  
       send(newsockfd, strfinal, sizeof(strfinal), 0);

better:

#include <stringstream>

std::sstream ss; 

    ss << "HTTP/1.0 200 OK \r\n\r\n";
    
	if (myfile.is_open()) //if the file is open
	{
		while (getline (myfile,line) ) //while the end of file is NOT reached
		{
			cout << line << endl;
			ss << line;
		}
	}  
    
    send(newsockfd, ss.str().s_str(), ss.str().size(), 0);

line 36:
should to be: std::string line;

line 80:
strcat(strfinal, line.c_str() );

instread of:

while (! myfile.eof() ) //while the end of file is NOT reached
		{
			getline (myfile,line);
			cout << line << endl;
			strcat(strfinal, line);
		}

better:

while (getline (myfile,line)) //while the end of file is NOT reached
		{
			cout << line << endl;
			strcat(strfinal, line);
		}

Hi!

I not sure that i got it, can you provide a example? I love examples!

Hi!

I would create a base class, from which the myTemplateClass will inherit.

like this:

class TemplateClassBase{};

template<class C>class myTemplateClass : TemplateClassBase{};

This should be a list:

myTemplateClass * templateClassPtrArray[10];

This is better:

std::list<TemplateClassBase*> templateClassPtrArray;

templateClassPtrArray.push_back( new myTemplateClass<int>() );
templateClassPtrArray.push_back( new myTemplateClass<char>() );

Code is NOT tested, was written from scratch.

When you have no problem to save anything.

I hope i was clear :/

tried this?

ifstream Data

It's the same.

An even easier way :Link

yeah, but we dont want to count like \r\n ., etc..

I would put the whole parameter in a struct, when is more readable:

vector<double>& A, vector<double>& B, vector<double>& C, double x, double& p, double& px, double& pxx, int& degree

better:

struct SomeName{
vector<double> A;
vector<double> B;
vector<double> C;
double x;
double p; 
double px;
double pxx; 
int degree;
}

the whole thing is confusing me.

class A:
    _a = 33

class B:
    __b = 22
    

a = A()
b = B()

print a._a
print b.__b

Output:

33
Traceback (most recent call last):
  File "p.py", line 12, in <module>
    print b.__b
AttributeError: B instance has no attribute '__b'

You welcome!

Well, maybe you should redesign your program? It looks odd.

did you try without "endl"?