C :: How To Develop Address Book For Contacts

Feb 19, 2014

I have to develop an address book for contacts, and it has to be able to add contacts, delete them, and show them all while implementing dynamic memory allocation. I'm thinking I should be going with an array of structures, but I'm not sure how to handle that in the context of this problem. I realize deleting them will most likely end up just being me using the free function. i'm thinking I should show all the contacts with a for loop, but say u deleted contacts, and those memory spaces were now absent, how would I go about it because the looping structure would be flawed wouldn't it.

View 3 Replies


ADVERTISEMENT

C++ :: Address Book - Add / View Entries

Sep 3, 2014

This program is an address book where you caan add/view entries. I'm having a problem printing out entries. Why the information isn't getting saved into the structure array?

Code:
#include <iostream>
#include <string>
using namespace std;
struct contactinfo

[Code] .....

View 1 Replies View Related

C++ :: Address Book - Program Stops After Cin

Dec 6, 2013

the program is of an address book. the syntax is all fine, and the initial menu of options does show up. but once you punch in the cin, the program just stops.

View 9 Replies View Related

C :: Creating Simple Address Book Struct - For Loop?

May 11, 2014

My address book will be simple, and the thing's that I'm expecting to use in it are :

Pointers, Linked Lists
Malloc
Structs
Typedefs
Makefile, header file
Putting functions into different program files

I have started the program trying to create a struct, and getting it working with a couple of entries before going onto user input and splitting it up.

Code:

#include <stdio.h>
#include <stdlib.h>
int main(void) {
// Struct type address book. Just a name, a number and a pointer

[Code] .....

I'm a bit lost at this point... My knee jerk thought is to create a for loop, and cycle through the list.

I'm not sure how this would apply to this though? Without using the familiar type of print loop such as :

Code:
for (i = 0; ;i++) {
printf("%i
", array[i];
}

I'm thinking that I need to create a temporary struct that can be used to assign the value of the next struct in the list, and then somehow print from that....

I'll try and write the logic out :

while temp != NULL (The last node value is assigned NULL to show us where the end of the list is)

create a temporary pointer that can be used to keep track of where we are in the list.

print out the current entry name and number

then assign the temp pointer value to the * next of the current struct. So if we are in entry1 the *next should be the address of entry 2.

Print out entry 2 name and number, assign entry 2 next to the temp value.

View 1 Replies View Related

C++ :: Developing Cellphone Contacts Backup Application

Feb 28, 2014

I am currently developing an application for backing-up cellphone contacts to a computer. The problem I am having is that I need my app to auto detect a cellphone (i.e. regardless of the Make and Model) when plug onto a computer and with a single click of a button "Backup" the app must backup all contact on the cellphone onto to the computer. How can I get my app to auto-detect a plugged cellphone and how can I go about reading the cellphone's contacts.

View 4 Replies View Related

C++ :: Develop Month Calendar By Designing A Class - Inheritance And Composition

Nov 10, 2014

In this assignment the student should develop a month calendar by designing a class called calendarType . This class uses two other classes (dateType and dayType) as described below:

1. dayType Class: This class has been designed by students in Lab1 exercises. Referee to it.
2. dateType Class: This class is designed and implemented to keep track of data. This class has been provided it to you. Study it first then add definitions and implementations of the following operations to this class:

- Test whether the year is a leap year. Leap year is identified by 3 criteria :
- The year is evenly divisible by 4;
- If the year can be evenly divided by 100, it is NOT a leap year, unless;
- The year is also evenly divisible by 400. Then it is a leap year.
- Return the number of days in the month. For example, if the date is 12/3/2014, the number of days to be returned is 31 because there are 31 days in March.
- Return the number of days passed in the year. For example, if the date is 18/3/2014 the number of days passed is 77. Note that the number of days returned also includes the current day.
- Return the number of days remaining in the year. For example, if the date is
18/3/2014 , the number of days remaining in the year is 288.
- Calculate the new date by adding a fixed number of days to the date. For example, if the date is 18/3/2014 and the days to be added are 25, the new date is 12/4/2014.

To print monthly calendar using calendarType class, you must know the first day of the month and the number of the days in that month. Thus, you must store the first day of the month, which is in the form of dayType and the month and the year of the calendar. Clearly, the month and the year can be stored as an object of the form dateType by setting the day component of the date to 1, and the month and year as specified by user.

Design the class calendarType so that the program print a calendar for any month starting 1/1/ 1500 which is Monday. To calculate the first day of a month, you can add the 2 appropriate days to Monday of January 1, 1500. For this class identify and implement the following operations:

- Determine the first day of the month for which the calendar will be printed. Call this operation firstDayOfMonth.
- set/get month.
- set/get year.
- Print calendar for particular month.
- Add the appropriate constructors to initialize the member variables.
- Write a test program to print the calendar for either a particular year or a particular month.

View 1 Replies View Related

C++ :: Develop A Function Which Prints A Binary Tree Using Post-order Traversal?

Feb 26, 2013

I am trying to develop a function which prints a binary tree using post-order traversal (left, right, root) but I am experiencing some troubles. The code is compiled but when I run the program it crashes right before printing the post-order traversal.

Below you can find my code and the output from debugging.

Code:
/**
Program which represents a Binary Search Tree and is modified with the following functions:
- smallest() - member function which searches for the smallest element in the tree.
- preorder() - member function which prints the tree nodes using pre-order traversal
- postorder() - member function which prints the tree nodes using post-order traversal (to be completed)
*/
#include <iostream>
#include <cstdlib>
#include <string>
using namespace std;
class TreeNode {
public:

[code]...

This is from the debugger log:

Child process PID: 5720
At C:Program Files (x86)CodeBlocksProjectsTestmain.cpp:316
At C:Program Files (x86)CodeBlocksProjectsTestmain.cpp:317
At C:Program Files (x86)CodeBlocksProjectsTestmain.cpp:318
At C:Program Files (x86)CodeBlocksProjectsTestmain.cpp:319
Program received signal SIGSEGV, Segmentation fault.
At C:Program Files (x86)CodeBlocksProjectsTestmain.cpp:279

View 9 Replies View Related

C++ :: Grade Book - Using Vector To Get The Grades

Sep 15, 2013

I am trying to make a grade book and using a vector to get the grades. I am getting errors all over and I figured this would happen because this is the first time I ever used vectors.

Code:
#ifndef ___2B__Homework__LetterGrade__
#define ___2B__Homework__LetterGrade__

#include <iostream>
#include <vector>

[Code] .....

View 12 Replies View Related

C :: Book Database - File Output

Feb 7, 2013

Book database. I use scanf to store book name,author name and year when is book written. Example:

Code:
scanf(" %[^
]",k[i].bookname);

I have problem when i want to printf all books from database with this:

Code:
for(i=0;i<counter;i++){
fscanf(f,"%s %s %d",k[i].bookname,k[i].author,&k[i].year);
printf("
%d %s %s %d",(i+1),k[i].bookname,k[i].author,k[i].year);} Output:

Number Book name Author name Year
1 King John 0
2 William Shakespeare 1590

How can i fix this?

View 4 Replies View Related

C :: Readline Function From UNP Book And Syncterm

Jan 15, 2015

I'm writing a program that uses the readline() function that comes in the Unix Network Programming book, when I use telnet to connect to my server the function reads the input perfectly displaying the username as the user types it in. However, when using a telnet client called syncterm it accepts the user input but does *not* echo it on the screen and I can't figure out why.

View 3 Replies View Related

C :: Phone Book Saving To File And Retrieving

Jul 14, 2013

I am supposed to make this phone book save to a file and then be able to retrieve it.

Code:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
typedef struct Phonebook_Contacts
{
char FirstName[20];
char LastName[20];
char PhoneNumber[20];
} phone;
}

[code]....

View 4 Replies View Related

C++ :: Program That Ask User To Input 5 Books With ISBN Title Of Book With Author

Jan 29, 2013

So I was asked to create a C++ program that will ask the user to input 5 books with the ISBN, Title of the book and author/s. It will ask for 3 authors, if the book has only one author, you should leave "author 2 and author 3" blank and display only one author. Thing is... I'm having a problem with the if else condition at the last part of my program. I cant seem to make it work.

#include <iostream>
#include <cstring>
#define SIZE 5
using namespace std;
int i;

[Code]...

View 9 Replies View Related

C++ :: Are Reference And Address Same

Aug 2, 2014

Are Reference and Address same or Different?

View 10 Replies View Related

C++ :: Finding The Address Of A Bitfield

Aug 14, 2013

So I obviously can't take the address of a bitfield, but is there a way to get the address of the field holding the bitfield? What I'm trying to do is find the address of the parent field of a bitfield in a class. For example

Code:
class Foo
{
public:
int a;
int b : 4;
int c : 28;
[Code] ....

My goal is to get the offset address of the int storing c in class Foo. But offsetof uses the address of c, so I get a compile error since c is a bitfield. What I wanted as output from the above would be "4", since an int is 4 bytes (on my system). So the int holding both b & c starts 4 bytes from the start of the Foo class. Is there any way to do this in c/c++?

View 14 Replies View Related

C++ :: Output Is Showing Address Instead Of Value

Dec 7, 2013

I've run across this issue before, but for the like of me, I can't figure out what keeps causing it. The problem compiles and runs as expected; however in the salaried object (Employee #1 in main.cpp) the console displays the number of vacation days as -858993460 instead of the value entered.

The parent Employee class is abstract with calculatePay() and displayEmployee() being pure virtualls and with a Benefits, Salaried, and Hourly class derived from it.

The Salaried displayEmployee() and the portion of the Main.cpp that contains the salaried object follows. What causing this?

Salaried displayEmployee()
Code:
void Salaried::displayEmployee()
{
cout << endl;
cout << "Employee Information" << endl;
cout << "----------------------------------" << endl;
cout << "Employee Name: " << setw(7) << FirstName << " " << LastName << endl;
cout << "Gender: " << setw(12) << Gender << endl;

[Code] .....

View 2 Replies View Related

C :: Display Address Of A Pointer

Jan 31, 2014

I've got a problem with a piece of code that it doesn't seem to work anymore.

Code:
#include <stdio.h>
#include <conio.h>
main () {

[Code] ..... i

I chose a to be 5 and it displays the following:

"Type a value for a:
5
5 in octal is: 5
5 in hexadecimal is: 5

Process returned 23 <0x17> execution time : 1.031 s".I first saw this when trying to display the address of a pointer. Am i missing something? I used to run this code on dev-c++ successfully but after a day or so of practice, it's not working anymore. I switched from dev-c++ to code blocks.

View 5 Replies View Related

C# :: Parsing String Into IP Address

Oct 1, 2012

So im trying to parse a string into a Ip Address but i have a problem, the IPAddress.Parse method only works for ipv4 address's how do i parse ANY Ip address into a string, if i use the IPaddress.Parse method on my public(remote) IP it throws an exception but on ipv4 local ip it doesn't how do i parse ANY ip address the user inputs as a string as an Ip Address?

View 5 Replies View Related

C++ :: Program That Will Display Name / Address And Age?

Jun 21, 2014

C++: write a c++ program that will display your name, address and age..

View 3 Replies View Related

C++ :: Store Address Of Objects

Oct 27, 2014

I'm using the SDL library and trying to match the C++11 standards... Anyway, I thought about a vector where I store all the addresses of game instances, so I can access them anytime... I tried with this function:

int instance_new(std::vector<uintptr_t> &instance_id, unsigned &instance_size, Instance *pointer) {
instance_id[instance_size] = reinterpret_cast<std::uintptr_t>(pointer);
instance_size++;
instance_id.resize(instance_size);
return 0;
}

Where "Instance" is the 'parent' class of various child classes like the player. So, if I have to search the existing of a thing in my game, I should check if the address references to an instance of class. How can I do this?

View 1 Replies View Related

C++ :: Displaying Address Of Character?

Feb 20, 2013

When this programs runs it displays odd symbols for the address of the character. This is only part of the program, I took out the parts that already work.

#include <iostream>
using namespace std;
char again;

[Code].....

View 2 Replies View Related

C/C++ :: Function To Return Either Value Or Address Of That Value?

Feb 1, 2015

I'd like a function to return either a value or the address of that value by the users input. So he can call the function like:

function("adress") - gets an adress, or function("value") - gets the value

I've tried both function overloading and templates, but none of them worked. He might input a character for the address and an int for the value... but...

Another strange thing that i observed is that the value returned by the function below is 0, so the output is address 0.

class testing
{
public:
static int x;

[Code].....

View 2 Replies View Related

C++ :: Why Can't Take The Address Of Operators For Primitives

Apr 3, 2013

Why can't I take the address of operators for primitives?

#include <iostream>
#include <string>
int main()
{
{
std::string (&plus)(std::string const&, std::string const&) = &std::operator+;
std::string a ("Hello, "), b("World!");
std::cout << plus(a, b) << std::endl;

[Code]...

[URL]....

I'm using this functionality in a templated class, do I really have to specialize for primitives or use std::enable_if?

View 2 Replies View Related

C/C++ :: IP Address To Binary Conversion

Mar 10, 2014

Converting an IP address to a binary number? As in the entire thing 123.45.555.49 to it's binary equivalent.

View 14 Replies View Related

C# :: Changing IP Address On Controller LED

Jul 2, 2014

I have a C-Power5200 driver. I want using the C# language change to the controller's IP address.

Here a link to the website and API.C-POWER 5200

In Annex API controller.

View 7 Replies View Related

C/C++ :: Address Of Integer Variable

Nov 25, 2014

Consider the below initialization of x.

int x = 0x01234567;

If x is stored in RAM as given below, what would be the address x in both case?

(if image is invisible please follow this link)

Assume that size of integer is 4 byte.

View 4 Replies View Related

C Sharp :: How To Get A Device Name For A Given Ip Address

Aug 13, 2013

I need to get the network device name for the given ip address..

I tried with dns.getHostByaddress but it didn't worked..

View 1 Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved