& how can I set up my pc to choose which OS or hard drive to boot from?
How to Connect 3 Hard Drives To Motherboard At The Same Time
& how can I set up my pc to choose which OS or hard drive to boot from?
How to Use Function Pointers in C
A function pointer is, in essence, just a pointer to a function. In languages such as C++, each function and variable in a computer program exists as a memory address, and a variable can contain the value of that address. That variable can be passed to a callback, which can then call the function that the variable points to. It can also be used in an event manager, or for late binding of a member function. Due to their complicated syntax, function pointers are often avoided by programmers, but can be used to easily accomplish many powerful tasks.
Things Youll Need:
- C++ compiler
- Step 1
Write a C++ program. This is the program in which you will use a function pointer.
- Step 2
Define a function pointer. You can do this one of several ways. Declare a function, such as:
void doSomething(int data);
and later declare a pointer to it. Or, you can declare a function as a pointer:
void (*doSomething)(int);
Lastly, you can declare a typedef, then create a variable of that type.
typedef void (*voidTakingInt)(int);
You can now use "voidTakingInt" as a type:
void doSomething(int data);
voidTakingInt fun_ptr = &doSomething; - Step 3
Declare something that uses the function pointer. This will often be something that uses the function pointer as a callback function, so that when a specific event occurs, the function runs your function. One example is a file-loading function that takes a callback function to indicate progress.
- Step 4
Call the function from the pointer to it. This would be done from within the function you wrote that accepts a function pointer as a parameter:
void doSomething(int data) {
}
void callAnotherFunction(void (*otherFunction)(int)) {
(*otherFunction)(3);
}
int main(int argc, char* argv[]) {
callAnotherFunction(&doSomething);
return 0;
How to Access My Computer From the Command Line in XP
If you need to access the command line inside of your Windows XP computer, there are two ways to do it. One way assumes that your computer is working properly, while the other assumes that your computer is malfunctioning, and you cant boot it up normally. Either way, accessing your computer through a command line is a straightforward process.
- Step 1
Turn on your computer and log into Windows as you normally would.
- Step 2
Wait for the operating system to load completely, then click on the "Start" button, then click on the "Run" button and type "cmd" (without quotes). Alternatively, click on the "Start" button, click on "All Programs," "Accessories" and "System Tools," and then click on the "Command Prompt" program choice.
- Step 3
Wait for the command prompt window to open. When finished, close the window by typing "exit" and pressing the "Enter" key.
- Step 1
Insert your original Windows XP CD into the computer and restart it. Choose the startup option that will allow you to boot from CD, then press any key to start the CD boot process.
- Step 2
Wait for the boot loader to go through the automated loading screens, then press the "R" key once the process has completed. This will start the Recovery Console.
- Step 3
At the command prompt, enter your username and password that you use to log on to Windows, then perform the operations you need to do. When finished, type "Exit," then press the "Enter" key to exit the Recovery Console. Restart the computer.
Command Line Access with a Working Computer
Command Line Access When Windows Wont Boot
How to convert iTunes music like mp3 to M4R iPhone ringtone
You may want to change your iPhone ringtone from time to time but do not want to pay $0.99 for every ringtone. In that case, make your own ringtone sounds to be a good idea. However, there would be another problem which is iPhone ringtone can just be the format of M4R. Then, what can you do? You may need a converter to convert various video or audio formats especially the most popular audio format MP3 into M4R.With a MP3 to M4R converter, you may not only convert audio format into M4R ringtone, but also take soundtrack from video formats and convert them to ringtone. Check the following easy steps for converting MP3 to M4R.
Instructions
- Step 1input mp3 file
Input your mp3 audio file
open iSkysoft iPhone ringtone maker and drag MP3 file directly to the program for making ringtone. - Step 2trim mp3 for iphone ringtone
Trim MP3 Music to iPhone Ringtone
Drag and drop the slide bar to appoint the start point and end point for your iPhone ringtone length. Alternatively, you can type exact time value into time-setting box. You can choose to preview the whole YouTube audio or video or just the trimmed part. - Step 3generate iphone ringtone
Convert MP3 Music to M4R Ringtone
After trimming, click Start button to generate the ringtone. The trimmed MP3 music would be converted into M4R ringtone and saved on ringtone category of your iTunes
Computer programing tutorials
if someone could give me a link thatd be greatComputer programing tutorials??
If youve never programmed before and want to learn programming concepts, I recommend starting with javascript. You can write the code on any computer without special software.
http://www.webteacher.com/javascript/
If you have some programming experience, or want to jump right in to C++, try
http://cprogramming.com
Good Luck
How to learn tutorials desktop wallpaper on computer
Sure. Its a bitmap file usually. If you want it to look best on your computer, then make it fit pixel perfect (example: If you are running at 1280x1024 then it will look best if the image is created in the same resolution). If not it will have to be stretched fullscreen and will distort the picture quality somewhat and you will lose some detail. If you leave it centered, it wont distort, but will have a large border around the excess areas but the picture itself will be normal resolution. Tiling looks plain ugly for single pictures. Dont even both with it for just a single large background image.
Tiling works great for making repeated patterned artwork though, but you need to make it so it ;wraps; seamlessly so you dont see the edges of your artwork on each tile. If you created a pattern that doesnt line up correctly with the adjacent tile edges then it will look ugly and ruin the illusion of a patterned background. The technique for this is to create an image that is 3x3 your original art and then paste it into all 9 squares to see how it will look as a desktop. If you can get your tile to look seamless here, then it will look nice.
If you need examples, look at the ones that come with Windows, view them, and see how theyre done. It will start to make sense.
Good programs to have are Adobe Photoshop, Adobe Illustrator, and of course Microsoft Paint.
On second thought, I just realized you asked this question like 50 times already so its likely you already know by now or havent caught a clue from the previous replies... Some of those answers were pretty good, so I guess this wont be of any use to you. Oh well, sorry I couldnt help in advance after writing all that crap. ;)
SEO tips
SEO tips -
Include meta tags on your <head></head> tags.Like this - <meta name="description" content="Enter your site description here" />
AND <meta name="keywords" content="Enter your keywords seperated by comma" />
Make your Main keywords in your blog to Italics or bold like -
Best computer tutorials for free, Best computer tricks
Include Alt tag for every image-
<img src="google.jpg" alt="Google" />
Get inbound links to your site-
You can get 1 inbound link from my blog just go to Bloggers page follow instruction and get 1 inbound link, you can get more by posting to forums, answers and much more.
More important get text/HTML ratio to 30% or more
You should have more text than html to increase your keyword density.
Have XML Sitemaps for your website-
XML sitemaps lists the URLs for a site. You can include additional information such as frequency of changes and when the last update was. This allows search engine to crawl site more intelligently. You can use Google sitemap generator to generate an XML or python sitemap for your website.
Have less Load time-
Your site must have less load time, if you dont have such website then use this tool - Page-speed (Free tool) to evaluate and improve your website speed.
Less flash materials should be used
You can use flash as some specific enhancements, but it is better to avoid a full flash website.
Submit your website to a directory website
Submit your website to a directory website like www.dmoz.org. Submitting site to directory site would definitely increase site ranking.