Latest Posts in Software Development

I started using C++ after learning Python, so I'm very very new to this. I'm writing a program and have 2 files in the project. I have my list.h class and my program. The list.h class, despite the fact that its a given class and should work, is ridled with errors. I won't post all the errors because its just too much but maybe if I show you guys the first error and help me fix it, I can keep working on the rest little by little so I can learn how to use this language from efficiently.

The code is:

// List.h
#ifndef _LIST_H_
#define _LIST_H_


#include <cstdlib>


class List {

public:
  List(size_t capacity=10); // constructor - allocates dynamic array
  List(const List &a); // copy constructor
  ~List(); // destructor

  int& operator[](size_t pos); // bracket operator
  List& operator=(const List &a); // assignment operator
  List& operator+=(const List &a); // += operator

  void append(int item);
  size_t size() const { return size_; }

private:
  void copy(const List &a);
  void resize(size_t new_size); // allocate new larger array
  int *data_; // dynamic array
  size_t size_; // size of dynamic array
  size_t capacity_; // capacity of dynamic array
};

inline int& List::operator[](size_t pos)
{
  return data_[pos];
}

#endif // _LIST_H_

The first error is, "Unresolved inclusion: <cstdlib>". What should I do?

Hi Sir I Want to Know about Database connection at runtime using tnsnames.ora

I'm trying to create a program that computes the values of cos using the Taylor Series
as long as the absolute value of a term is greater than 0.0001 and prints the
number of terms used in the series approximation. My code is the following and as of right now I am getting the wrong result. Please help me fix it! I've spent hours trying to figure it out and don't know what to do.

Enter the angle in radians: 3.14
There were 8 numbers of terms used in the series approximation.
The calculated cosine of 3.14 is 0.00499852
The C++ cosine of 3.14 is -0.999999

// Pre-processor Directives
#include<iostream> // Required for for use of cin, cout
#include<cmath> // Required for use of sin, cos, pow functions
#include <iomanip>

// using directives
using namespace std;

// PROGRAM STARTS HERE!
double factorial(double x);
double calculate(double ang);


// Declaration of the main function
int main()
{
    // Declare variables
    double angle;
    double calccos;
    double cosine;

    // Ask for user input
    cout << "Enter the angle in radians: ";
    cin >> angle;

    // Compute the value of cos using a function
    calccos = calculate(angle);

    // Compute the actual value of cos
    cosine = cos(angle);

    // Display the result
    cout << "The calculated cosine of " << angle << " is " << calccos << endl;
    cout << "The C++ cosine of " << angle << " is " << cosine << endl;

    // Exit program.
    system("PAUSE");
    return 0;
}

// Calculate the factorial
double factorial(double x)
{
    if (x <= 1)
    {
        return 1;
    }
    else
    {
        return (x * factorial(x-1));
    }
}

double calculate(double ang)
{
    // Declare the variables
    double temp;
    int count = 0;
    double x;

    // For Loop
    for (int i=1; i<=100; i+=2)
    {
        // Test the values
        if ( i==1 || fabs(x) >.0001)
        {
            if ( count % 2 == 0)
            {
            temp = temp + (pow(ang, i+1)/factorial(i));
            }
            if ( count % 2 == 1)
            {
             temp = temp - (pow(ang, i+1)/factorial(i));
            }

            count++;
            x= pow(ang, i+1)/factorial(i);
        }
    }

    // Display the number of terms in the series
    cout << "There were " << count << " numbers of terms used in the series approximation. " << endl;
    return temp;
}

I have a java program where users can enter data into the textfields and click a simulate button to show the results in a jtable based on distribution calculations. I'm having trouble with distributions (normal,exponential, uniform, and weibel) in java and i need help getting the entered data to add rows based on a number in a textfield and show the results of the calculations in a jtable. Any help would be appreciated.

Hmm well, let me explain like this:

The package contains this:
Class A
Class B
Class C

All of the above contain copyrights.
What I'm doing is creating a NewClass.java with code such as this:

ClassA a = new ClassA();
a.doStuff();

So do you think I need to insert that copyright disclaimer in NewClass.java?

http://www.apache.org/licenses/LICENSE-2.0.html

This licence is referred to along with several paragraph of comments in a Java API based project I'm using for research.

I'm having difficulty understanding some of the law-speak in the license. Especially this part:

You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and

What I'm doing is creating my own classes that call the methods in the provided work, but not modifying them directly. Does this mean my file should still contain their copyright notice on the top?

I'm trying to write a recursive functionthat receives a parameter n and returns the multiple of 5.
Example: if we have 5 as the argument, the print out will be :
5
10
15
20
25

My code:

def MultiplyRecursive(r):  
  if r == 1:
    return 5
  else:
    return MultiplyRecursive(r-1) + 5

So, i'm working on a layout that has to be in xhtml.. i changed the extension from html > xhtml and i got this prompt..

"This page contains the following errors:

error on line 15 at column 8: Opening and ending tag mismatch: link line 0 and head
Below is a rendering of the page up to the first error"

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">
<head>
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
        <title></title>
        <meta name="description" content="">
        <meta name="viewport" content="width=device-width">

        <link rel="stylesheet" href="fonts.css">
        <link rel="stylesheet" href="normalize.min.css">
        <link rel="stylesheet" href="main.css">


</head>
<body>

<section>

  <header> <!-- TOP SECTION OF THE LETTER -->
    <div id="name-address-from">
      <p id="fullname">Dixie Cleverelle</p>
      <p id="company">The biz</p>
      <p id="address">28 Green St. Suite 15 </br>
      Upstate, NY 10946</p>
    </div>

    <div id="date">
      <p id="thedate">December 3rd /13</p>
    </div>


    <div id="name-address-too">
      <p id="fullname-too">Ms. Margaret Jones</p>
      <p id="company-too">The other biz</p>
      <p id="address-too">48 Stanstead Road </br>
      London SE37 1HF</p>
    </div>

    <div id="subject">
      <h1>For the Attention Of:</h1>
    </div> 
  </header> <!-- TOP SECTION OF THE LETTER --> 









  <article> <!-- THE CONTENT OF THE LETTER -->
    <div id="content">
      <p class="paragraph-first">
        Lorem ipsum dolor sit amet, consectetur adipiscing elit. Morbi pulvinar augue nibh, eget vestibulum ligula tincidunt venenatis. Aenean molestie lectus at pulvinar tempor. Nullam convallis odio arcu, lobortis pellentesque tortor ornare sit amet. Morbi sodales metus vel massa tempus scelerisque. Integer commodo mollis consequat. Curabitur tristique, mi in suscipit ornare, lacus lorem dapibus lectus, vehicula commodo dolor metus ut metus. Curabitur sollicitudin hendrerit lectus sit amet cursus. Vivamus dolor nulla, porttitor quis convallis nec, placerat sit amet velit.
      </p>

      <p class="paragraph-second">
Etiam eu consectetur nibh. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus eget sollicitudin velit, eu varius ligula. Sed nisi erat, dignissim eleifend scelerisque non, tincidunt sed nisl. Proin quis volutpat augue, non sollicitudin arcu. Aliquam erat volutpat. In et eros viverra, tincidunt orci eget, aliquam lectus. Nam dignissim sapien lorem, id faucibus ante fermentum eu.

      </p>
    </div>
  <article> <!-- THE CONTENT OF THE LETTER -->










  <footer>
    <div id="from">
      <p>Sincerely yours, <br/>
      <h3>Mitch Schols</h3></p>
    </div>
  </footer>

</section>



    </body>
</html>

Ah thanks a lot!! it works! :D
Now its all about getting the count to work correctly.