C++ :: Implementing Classes And Creating A Driver Function?

Nov 30, 2012

For this problem, you will design and implement 2 classes and then write a driver function to test these classes. The first will be a C++ class for an abstract data type color with a public enumeration type colorType that has the color values shown in Listing 10.8. Your abstract data type should have an attribute for storing a single value of type colortype and member functions for reading (readColor) and writing (writeColor) a color value as well as setting and accessing it. The function readColor should read a color as a string and store the corresponding color value in the value attribute of a type color object. The function writeColor should display as a string the value stored in the value attribute of a type color object (see Figure 7.5). Modify class circle and the driver function in Listing 10.9 to include and use this class. You'll need to remove the declaration for color in class circle. Test your modified driver function with the new color and circle classes.

The second class will be to design and implement a rectangle class similar to class circle. Be sure to incorporate the new color class you have written and tested in the first part of the programming exercise. Write a client program that asks the user to enter a shape name (circle or rectangle) and then asks the user for the necessary data for an object of that class. The program should create the object and display all its attributes.

The circle class .h and .cpp files as well as the original driver function will be supplied. You are to provide the .h and .cpp files for the new color class and the modified driver function as well as the .h and .cpp files for the rectangle class and the client program that uses all three classes.

What I have so far, and I'm pretty lost;

color.h

Code:

Code:
//color.h
//Color class definition
#include "stdafx.h"
#ifndef COLOR_H
#define COLOR_H
class color {
public:
enum colorType {black, blue, green, cyan, red, magenta, brown, lightgray, nocolor};

[code].....

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Visual C++ :: Implementing Classes And Creating Driver Function?

Nov 30, 2012

I'm am having a few issues with this program, they stem from passing the color.h and .cpp into another .h and .cpp, and frankly getting how those two things really fit together.

For this problem, you will design and implement 2 classes and then write a driver function to test these classes. The first will be a C++ class for an abstract data type color with a public enumeration type colorType that has the color values shown in Listing 10.8. Your abstract data type should have an attribute for storing a single value of type colortype and member functions for reading (readColor) and writing (writeColor) a color value as well as setting and accessing it. The function readColor should read a color as a string and store the corresponding color value in the value attribute of a type color object. The function writeColor should display as a string the value stored in the value attribute of a type color object (see Figure 7.5). Modify class circle and the driver function in Listing 10.9 to include and use this class. You'll need to remove the declaration for color in class circle. Test your modified driver function with the new color and circle classes.

The second class will be to design and implement a rectangle class similar to class circle. Be sure to incorporate the new color class you have written and tested in the first part of the programming exercise. Write a client program that asks the user to enter a shape name (circle or rectangle) and then asks the user for the necessary data for an object of that class. The program should create the object and display all its attributes.

The circle class .h and .cpp files as well as the original driver function will be supplied. You are to provide the .h and .cpp files for the new color class and the modified driver function as well as the .h and .cpp files for the rectangle class and the client program that uses all three classes.

color.h

Code:

//color.h
//Color class definition
#include "stdafx.h"
#ifndef COLOR_H

[Code].....

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Feb 25, 2014

I am creating a bank account using classes. I have created the classes and now implementing them in my main program. I haven't written anything in the withdraw, find acct and all functions except "read account: read_acct()" because i wanna test if it reading the data from my .txt file or not. Dont know whats wrong with the program its not executing. Would let know that i'm new to classes and objects. Following is the code:

****************************************************
*************MAIN PROGRAM*************************
****************************************************
****Bank Accounts.cpp****

[Code]....

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Jun 19, 2014

I've been working on a project for a few days now, and within this project I need to have a class system that can function similarly to an if statement. The problem I'm having is I can't seem to find any good information on the order in which if statements process the information within it. I understand that if statements process whatever's in parenthesis first, but my question is that when their are several booleans of equal value, for example: "if(x == 1 && y == 2 || 3 == 4 && 4==6)", in what order does it process these true or false statements? (The actual content of the example is superfluous).

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I want to create template of of Array in order to have possibility use this template for classes Line and Point.

Code:
// Array.h
// Templated Array class containging Ts
#ifndef Array_H
#define Array_H
template <class T=double> class Array {

[Code] .....

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C++ :: Implementing Ksmall As A Function

Mar 19, 2013

Implement ksmall as a C++ function. Use the first item of the array as the pivot. This is what I have so far, but everytime I compile it crashes ....

#include <cstdlib>
#include <iostream>
using namespace std;
int kSmall(int k, int anArray[], int first, int last);

[Code] ....

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Code:
fd_set readfds,writefds;
while(1){
FD_ZERO(&readfds);
FD_ZERO(&writefds);
FD_SET(sd,&readfds);
FD_SET(sd,&writefds);

int rv = select(n, &readfds, NULL, NULL, NULL);

[Code] .....

At first on the server side I wrote:
int rv = select(n, &readfds, &writefds, NULL, NULL);

But that led to the printing of an entire empty array on the server console when the server initialised in addition to the fact that communication between the server and client was not proper. removing "&writefds" did remove the redundant data but the improper communication issue still persists...

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Code:
"(Header File)"
#include <iostream>
#include <string>
using namespace std;
class node {
public:
int ID;
node (string StudentName, int IDNumber) {

[Code] ....

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C++ :: Implementing Recursive Function To Print Linked List In Reverse Order

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Implement a recursive function named void printBack(DoublyLinkedNode<T>* node) for the class DoublyLinkedCircularList which will print out the elements in the list from back to front. The function is initially called with the first node in the list. You may not make use of the previous(prev) links

This is my solution where I got 2 out of a possible 3 marks:

template<class T>
void DoublyLinkedCircularList<T> :: printBack(DoublyLinkedNode<T>* node) {
if(node->next == NULL) //Correct- 1 mark
return 0;
else
printBack(node->next); //Correct - 1 mark
cout << current-> element << " ";
}

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Feb 18, 2015

I am trying to create "dummy" drivers for testing purposes of another program of mine.

I want to be able to Call DeviceIoControl and pass a string in as the buffer and then receive that string in the driver, change it and return it. But right now I am not able to receive the string, when i get the buffer and print it out it is garbage. Where am I going wrong?

TEST

int _tmain(int argc, _TCHAR* argv[]) {
BOOL freeResult, runTimeLinkSuccess = FALSE;
HANDLE RTC_IOControlHandle = NULL;
HINSTANCE FRS_IOControlHandle = NULL;
RTC_IOControlHandle = CreateFile(L"\.ROOT#SAMPLE#0000#{db3d5a0e-63aa-4b97-9d05-b50d5093a20f}",
FILE_SHARE_READ | FILE_SHARE_WRITE,
0,//FILE_SHARE_READ | FILE_SHARE_WRITE,

[code]....

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C/C++ :: How To Use Node Struct In Test Driver

Jul 24, 2014

I have a file system class that has a struct named Node declared private as so:

class FileSys{
private:
struct Node {
Node* next;
Node* prev
Node* parent;
int key;

[Code] ....

But how would I get to the Node struct? I tried to do this in the main but of course I received an error:

FileSys FS_Obj;
FS_Obj Node* T = new Node;

With errors:

Error: expected ; before Node
Error: Statement has no effect

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I've got a project to develop a virtual pdf printer driver for windows in C++ programming language.

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How to proceed to develop this driver.

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Jun 12, 2013

I am having difficulty calling the constructor in interface portion of my program. I get the error: no matching function for call to ‘Node::Node(int, NULL)’ when I try to call it on line 26 within the main function.

code:
interface: [URL]
implementation: [URL]
main file: [URL]

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May 14, 2014

How to install/remove an INF driver though a button click event. So far I have some code for installing the driver, however it doesn't work.

private void installDriversToolStripMenuItem_Click(object sender, EventArgs e) {
if (SetupCopyOEMInf("./PS3MCADriver/PS3_Memory_Card_Adaptor.inf", null, 0, 0, null, 0, 0, null)) {
foreach (string device in devices) {
UpdateDriverForPlugAndPlayDevices(IntPtr.Zero, device, "./PS3MCADriver/PS3_Memory_Card_Adaptor.inf", 0, false);

[Code] .....

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Jan 21, 2013

I am getting "driver could not be loaded due to system error 8" error while connecting to SQL Server 2005 from VC++. Its also throwing out of memory error. Basically i am developing and ISAPI dll. I use the following code to connect to DB.

CDatabase DBConnection;
if(! DBConnection.IsOpen()) {
DBConnection.OpenEx("Driver={SQL Server};Server=10.120.110.30;Database=Test;Trusted_Connection=yes;", CDatabase:penReadOnly | CDatabase::noOdbcDialog);

[Code] .....

for CDatabaseConnection, i can see 2 different method to open the connection, OpenEx and Open. Whats the difference between OpenEx and Open?

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C++ :: Can A Friend Function Work For Two Classes?

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If yes then how?

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I wrote this code to find the factorial of any given function ., works fine but when i put it in a class... it gives me an error ::assignment of read only variable fact;

#include <iostream>
using namespace std;
const static int fact=1;
class My_Factorial {
public:
int x;
void Get_Number(){
cout<<"enter a number to find its factorial";

[Code] ....

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Let say i have a following scenario:

a function like this.

Code:
template <typename T1>
print (T1 x){
cout << x << "
";
}

How do I prevent user passing a class or a structure or aanoter function to my function print. I mean i know if a wrong thing is passed that i'll get an error eventually but is there a way to explicitly check what has been passed. How is this done usually ?

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C++ :: Defining Classes And Using Them Inside Void Main Function

May 18, 2013

This is a program I developed in which we had to define a class named BOOK with the data members and member functions as shown in the program..We have to:

(i) Make the user enter the values in the array BOOK.
(ii) Display the details that the user entered.
(iii) Search for a book from the array upon its Bno and display its details.
(iv) Search for a book from the array upon its Bname and display its details.

PROGRAM:

#include<iostream.h>
#include<conio.h>
#include<stdio.h>
#include<string.h>
class BOOK {
private:
int Bno;
char Bname[20];

[Code] .....

But while running it the compiler gives the errors as:

Line 43 to 48: Illegal character '' (0x5c)
Line 69: Undefined symbol 'Display'
Line 88: 'BOOK::Bno' is not accessible.
Line 89:'BOOK::Bname' is not accessible.
Line 90:'BOOK::Author' is not accesible.
Line 91:'BOOK::Price' is not accesible.
Line 108:'BOOK::Bno' is not accessible.
Line 109:'BOOK::Bname' is not accessible.
Line 110:'BOOK::Author' is not accesible.
Line 111:'BOOK::Price' is not accesible.
from 43 to 48..the line feed was also used at many other places but there it was not given as an error so why here?
Line 69: I defined the Display() function outside the class since it contained control structures, so what's the error then?

About the lines the rest of the error( the "not accessible" ones) I know these data members are not accessible because they are in private visibility mode. But then how to make them accessible? (Without putting them in public because it was a part of the question to create the data members in private).

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Oct 5, 2013

I have an array of (Student)classes created in Manager.h, which contains a new instance of class Name (name),(in Student.h)How would I go about accessing the SetFirstName method in Name.cpp if I was in a class Manager.cpp? I have tried using Students[i].name.SetFirstName("name");

// In Manager.h
#include"Student.h"
class Manager
{

[Code]....

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Jan 27, 2015

I want to create a C library function that i can directly call in my code from any .c file having main program.following are codes...code of library function "foo.c"

Code:

#include "foo.h"
int foo(int x) /* Function definition */ {
return x + 5;
} header file "foo.h"

Code:

#ifndef FOO_H_ /* Include guard */
#define FOO_H_
int foo(int x); /* An example function declaration */
}

[code]....

to use this i have to compile the file in below manner...

Code: gcc -o my_app main.c foo.c

My concern here is that i want to compile the main.c and use function without compiling foo.c with i.e.

Code: gcc -o my_app main.c

any user of this function should only compile his program and should be able to use the function, the foo.c file should remain hidden from him

my system is Linux 2.6.18-308.4.1.el5 #1 SMP Wed Mar 28 01:54:56 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux

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Feb 16, 2014

I am currently working on a "bag" class which is sort of a common sense answer to creating a random class with difference functions. I am attempting to create a "union" function which takes two bags ie: bag1 and bag2, adds all the items in both bags and creates a new bag ie: "bag3". For some reason I keep coming up with problems instead of solutions. Maybe it's the fact I just got done with 2 days of calculus. I don't know. My code is below. Both a main(source) and header file.

Header

#ifndef BAG_H
#define BAG_H
const int BAG_CAPACITY = 20;
template <typename T>
class Bag {
private:
int count; // Number of items in the Bag

[code]....

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How to create a diagonal pattern by the given function

void diagonal(int size, char op)

The function takes in 2 arguments, size and op and displays a diagonal line of op char. for example, diagonal (5,#) will produce the following output.

#
#
#
#
#

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I need a function to return a string

I need to pass input as "a,b,c,a,c,d,e"

function should return out put as

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