I would go for an external Network Hard disk or a NAS (which is directly connected to the router via Ethernet) ...
As backup software you have a lot of choice ... Two free and very good backup programs are SyncBack and Cobian Backup (just use Google to find them) ...
Agreed with 'Norton is bulk', but the 2009 version is still a great improvement over the previous versions, but I would recommend using another AV, AVG is a good one, but AVIRA AntiVir is currently getting high marks from AV-Comparatives and it's also free, it's only a matter of choice ...
Hi, I found some (useful:?:) information about 2D-Arrays ...
Actually this is what I need, but could you please take a look at it to ensure the programming style is correct ? (According to that article my code was right (except for : Explicit row parameter in destroy2DMatrix: an erron-prone and inconvenient method. , which I absolutely agree with !), or am I wrong ?)
Is it also good if I do the following: 1) Class 'array' (a simple vector): -> Array is a class which holds a simple 1-dimensional array and the number of elements in the array (in the private section) -> Overload the '[]' and '=' operators ...
2) Create a class 'matrix' in which I hold the class 'array' ... -> In this class we create a table of objects from the class 'array'
Bad practice wanted? That's bad practice: 1. C-style 2D array allocation/deallocation functions instead of complete 2D array class with full set of operations. 2. Explicit row parameter in destroy2DMatrix: an erron-prone and inconvenient method. 3. Template function definitions after calls: most of C++ compilers can't process this code. 4. 2D matrix... A matrix is a 2D (2D only) array with specific operators - by matrix definition... ;)
Can someone please take a look at my code to ensure there aren't any memory leaks or (array) overrides or anything else which could be a bad practice in my code ...
Here's my code:
#include <iostream>
using namespace std;
template <typename T>
void create2DMatrix(int rows, int cols, T **&matrix);
template <typename T>
void destroy2DMatrix(int rows, T **&matrix);
int main()
{
double ** test; /* Needed for our Dynamic 2D Matrix */
create2DMatrix(2, 1, test); /* Create a 2D Matrix */
test[0][0] = 23.59; /* Put some data in the Matrix */
cout << test[0][0] << endl; /* Print the data on the screen */
destroy2DMatrix(2, test); /* Clean up (destroy our 2D Matrix) */
return 0; /* Exit the program ... */
}
template <typename T>
void create2DMatrix(int rows, int cols, T **&matrix)
{
/* Create a 2D Dynamic Array / Matrix */
matrix = new T * [rows];
for(int i = 0; i < rows; i++)
{
matrix[i] = new T[cols];
}
}
template <typename T>
void destroy2DMatrix(int rows, T **&matrix)
{
/* Destroy a 2D Dynamic Array / Matrix */
for(int i = 0; i < rows; i++)
{
delete[] matrix[i];
}
delete[] matrix;
}
Assert is a C++ macro and when the compiler comes across assert, it replaces the assert call with the instructions to evaluate an expression + the instructions to exit the program if the expression returned false ...
e.g.: assert(1>2); will exit the program because 1 isn't greater than 2 ...
int main(void)
{
/* Declare the '2D Array' */
char ** ptr = new char * [5];
ptr[0] = new char[20];
ptr[1] = new char[20];
ptr[2] = new char[20];
ptr[3] = new char[20];
ptr[4] = new char[20];
/* Put some data in the array */
// below you lose all the above allocated 20 byte chunks because you
// re-assign the pointers to strings, meaning that you cannot anymore
// delete the allocated memory, which you should do
ptr[0] = "Hello ";
ptr[1] = "wond";
ptr[2] = "er";
ptr[3] = "ful";
ptr[4] = " world !!!";
// instead you should e.g.: strcpy(ptr[0], "Hello ") and so on ..
/* Print the array on the screen */
for(int i = 0; i < 5; i++)
cout << ptr[i];
cout << endl;
// you are not deleting the 20 byte chunks here
/* Cleanup */
delete[] ptr;
/* Wait for the user to press ENTER */
cin.get();
/* Tell the Operating System that everything went well */
return 0;
}
Thank you very much for letting me know ...
Do you mean the following? -> Assign using strcopy(); -> Use a loop afterwards to cleanup ALL the memory ...
C++ doesn't provide built-in support for multithreading, the reason for that is you have to use the operating system's features to write a multithreaded application (as it's the most efficient way) ...
But as Ancient Dragon did already say: The Operating System has to distribute the threads among all the available CPU-cores ...
If copy protection also falls under 'plagiarism detection' then you could do the following: -> Check the MAC-address of the computer and compare it with a list of MAC-addresses in an online database ... (This is already a very good protection ...)
If plagiarism detection only: -> You could maybe make use of checksums to verify the program before launching it actually ...
I'm always using the following code if I want to use a 2D Dynamic char array:
#include <iostream>
using namespace std;
int main(void)
{
/* Declare the '2D Array' */
char ** ptr = new char * [5];
ptr[0] = new char[20];
ptr[1] = new char[20];
ptr[2] = new char[20];
ptr[3] = new char[20];
ptr[4] = new char[20];
/* Put some data in the array */
ptr[0] = "Hello ";
ptr[1] = "wond";
ptr[2] = "er";
ptr[3] = "ful";
ptr[4] = " world !!!";
/* Print the array on the screen */
for(int i = 0; i < 5; i++)
cout << ptr[i];
cout << endl;
/* Cleanup */
delete[] ptr;
/* Wait for the user to press ENTER */
cin.get();
/* Tell the Operating System that everything went well */
return 0;
}
#include<iostream.h>
struct batting{
char name[20];
int score;
int out;
};
struct bowling{
char name[20];
int maiden;
int runs;
int wickets;
};
int main()
{
int i,j;
cout<<"How many number of batting&bowling team:";
cin>>i;
batting *bat=new batting[i];
batting *bat1;
bowling *bow=new bowling[i];
bowling *bow1;
cin.ignore(1000, '\n');
for(j=0;j<i;j++)
{
bat1=&bat[j];
cout<<"\nEnter name:";
cin.getline((*bat1).name,20);
cout<<"\nEnter score:";
cin>>(*bat1).score;
cout<<"\nIndication out(out=1&in=0)";
cin>>(*bat).out;
}
cin.ignore(1000,'\n');
for(j=0;j<i;j++)
{
bow1=&bow[j];
cout<<"\nEnter name:";
cin.getline((*bow1).name,20);
cout<<"\nEnter maiden:";
cin>>(*bow1).maiden;
cout<<"\nEnter no: of runs";
cin>>(*bow1).runs;
cout<<"\nEnter wickets no:";
cin>>(*bow1).wickets;
}
int k=0;
cout<<"\n*******Which Information You would like to know?*******";
cout<<"\nEnter 1 for Batting team && 2 for bowling team";
cin>>j;
if(j==1)
for(k=0;k<i;k++)
{
bat1=&bat[k];
cout<<"\nName:"<<(*bat1).name;
cout<<"\nScore:"<<(*bat1).score;
cout<<"\nOut:"<<(*bat1).out;
}
return 0;
}
What did I change? > First I removed all cin.ignore() statements out of your code ... > Secondly I added cin.ignore(1000, '\n'); on line 27 and on line 38 ...
time(0); or time(NULL); returns the system time in seconds ...
The C++ Declaration of the 'time()'-function looks as follows: time_t time ( time_t * timer ); So if you pass a NULL-pointer as argument, it will just return the time ... But between the brackets you can also type the name of a 'time_t' object and call the function with a 'time_t'-object as parameter ... When doing this the function saves the system time (in seconds) to the 'time_t'-object ...
You can maybe write a program to estimate the square root of a given number, or you could write a function 'stod' which converts a string to a double ... Or a function which checks whether a string can be turned into a number or not ... Or ... you could write a program which evaluates mathematical expressions ... Or you can create you own class to provides C++ equivalents for the Visual Basic functions redim and redim preserve ... etc. etc. ...
I think you're having trouble with this code because you're using cin.ignore() somewhere in your code, I can't figure out anything else which is wrong ...
I think you should make use of cin.ignore(1000); or something like that ... For more information read the following thread about it: http://www.daniweb.com/forums/thread90228.html The error is definitely in the function 'void AddRecord()' ...
I used the following program to count it (sure it can be written in a shorter way ;))
#include <iostream>
#include <fstream>
using namespace std;
int main()
{
char chr;
int c = 0;
ifstream file;
file.open("test4.cpp"); /* Replace test.cpp with the name of the file where you want to count the characters of */
while(!file.eof())
{
file >> chr;
c++;
}
cout << c << endl;
return 0;
}
BTW, why do you use 'list.h' ? It doesn't compile with that ... You can maybe create your own header file called 'h' and put the instruction #include <iostream.h> in it (if it's allowed to use a seperate header file) ... After that you can replace #include <list.h> with #include "h"
I've made some changes to your code (there were some logical bugs in your program) I'm not pointing out them in this post, I just want to refer you to your own code and compare it with the (working(?)) code below:
Hello, first of all I'm not a Unix expert at all (otherwise I wasn't asking this question), but I'm having some trouble starting my X-Server ...
When I type the following: startx or X I get the following error message(s):
...
No core pointer
Fatal server error: Failed to initialize core devices
...
Please also check the log file at "/var/log/Xorg.0.log" for additional information.
The contents of the "/var/log/Xorg.0.log" log file:
(II) I810(0): xf86UnbindGARTMemory: unbind key 7
(II) I810(0): xf86UnbindGARTMemory: unbind key 8
(II) I810(0): xf86UnbindGARTMemory: unbind key 9
I'm using FreeBSD 6.0 (Yes, I know it starts getting dated) (My computer: Dell OptiPlex GX110, I'm using an USB mouse)
Thanks in advance !
P.S.: Sorry if my English is bad, my native language is Dutch...
> Are you creating a class library? => In this case you'll have to compile it to object code first and after that you can create a library from it ... > Are you writing a stand-alone program? => In this case you'll have to add a main() function to your program, you know:
int main()
{
/* Your code here */
return 0;
}
> What compiler/IDE are you using ?
P.S.: I can confirm that with me your code compiles perfectly, without any warnings or errors, I'm using the Borland Compiler ...
