It’s more or less inevitable: Over a period of time, many organ-izations are going to collect your e-mail address. And, sooner or later, after signing up for something and providing your e-mail address to this Web site or that Web site, your e-mail address is going to leak to or be purchased by a mass … Read more
Bad things happen to all people, not just good people. One of the bad things that happens is data loss — one important file, several files, or everything can disappear into cyber-limbo. Here are some common ways it happens: You can simply make some mistake — accidentally deleting data that you can’t get back because … Read more
If you have an “always on” Internet connection, then consider using a hardware firewall. A hardware firewall protects all of the computers and other devices on your network, eliminating the need to install a software firewall on each one. If you’re not convinced that you need a firewall, then consider this: fully one third of … Read more
Windows computers can be attacked in many ways — and not just with viruses, worms, or Trojan horses. Another popular way to attack a Windows computer is to attempt to communicate to it over any of the network “ports” found on Windows computers. These ports are kind of like TV channels or radio frequencies: Computers … Read more
Before you go grab and install a security patch, you may want to get to know a few basic facts about it — where to get it, what it does, whether it’ll cost you, that sort of thing. Most software makers have this process figured out, more or less, even if they don’t collectively take … Read more
C Program to check whether a two dimensional array is a Sparse Matrix A Sparse Matrix is a matrix(two-dimensional array) in which number of 0’s is greater than the number of non-zero elements. #include<stdio.h> int main() { printf(“\n\n\t\Eduguru- C program example\n\n\n”); int n, m, c, d, matrix[10][10]; int counter = 0; printf(“\nEnter the number of … Read more
The big software programs that run on PCs today consist of thousands — and sometimes even millions — of lines of source code (the step-by-step instructions that give the program its functionality and personality). That’s a lot to keep track of — and (as with anything made by people) flaws can creep in. Software can … Read more
If suddenly the realization hits that it’s been more than a week since you updated your virus-signature file, you better scan your computer for viruses immediately — particularly if you’re the active type (lots of e-mail, file sharing, file swapping, opening mail from strangers, and other such cyber-exuberance). The more time that has gone by … Read more
Simple Program to remove Duplicate Element in an Array #include<stdio.h> #include<conio.h> void main() { int a[20], i, j, k, n; clrscr(); printf(“\nEnter array size: “); scanf(“%d”, &n); printf(“\nEnter %d array element: “, n); for(i = 0; i < n; i++) { scanf(“%d”, &a[i]); } printf(“\nOriginal array is: “); for(i = 0; i < n; … Read more
Signature updates are your antivirus program’s ammunition. Without regular signature updates, your antivirus program quickly becomes dependent on unreliable ammo — which is to say, practically useless. Fortunately, getting the good new stuff is pretty straightforward, whether you do it manually or automatically. Manual updates Antivirus programs permit you to do signature file updates “on … Read more