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Computer Programming

A category for questions about computer programming and programming languages.

10,506 Questions

What is a semantic web?

The word semantic stands for the meaning of. The semantic of something is the meaning of something. The Semantic Web is a web that is able to describe things in a way that computers can understand.

What does Invisible queue means?

USB, Serial, and Parallel are all examples of which of the following?

What is the purpose of crossbreeding programs?

The objective of crossbreeding programs is to combine the most desirable traits of select breeds in order to arrive at the desired characteristics of leanness, meatiness, feed efficiency, growth rate, and durability.

Is spiht algorithm a part of JPEG 2000 coding?

No. SPIHT and JPEG are two different compression algorithms.

Can dijkstra's algorithm produce a spanning tree?

yes, but a shortest path tree, not a minimum spanning tree

C compiler for 64bit computer?

Platform-dependent (Windows, Linux, AIX, MacOs etx), but gcc seems to be a safe bet.

Why would a programmer use the EICAR test files?

When they wanted to test the capability of their software to detect viruses in a safe manner.

Computer wiz hackers spammers how do you get a message out?

Most spammers utilize very illegal means to broadcast their messages. They usually use bot networks - groups of machines they have compromised and turned into "zombies" - to launch their massive email barrages. There are several reasons for doing this:

1) since spamming is illegal in many areas, they try to insulate themselves from being identified as the source of the spam

2) Even where spamming is not explicitly illegal, the crap they are hawking often is - either outright or because it is fraudulent. Consequently, it is valuable to them to make it hard to identify the source of the spam.

3) By using someone else's computer to send the spam, they insulate themselves from retribution from those they are spamming

4) They don't have to actually buy the hardware, they can just steal it (or at least the use of it) by hacking it and installing their software on it without the owner's permission. "Owning" a machine in this way is just a slang term meaning that they have control of it - they certainly don't own it from a legal standpoint.

The details of how they compromise other people's machines and set up bot networks will not be presented on this website - which has a policy of not aiding and abetting criminal activities.

To count the number of characters in the given text file in unix?

Look at the "wc" command's man page, it will give you a count of all characters, including the newline character.

What is the structure of a J2ME program?

<J2ME>

//Begin the body of the program here

<Midlet>

//This is where the midlet code goes

</start-app>

</pause-app>

</destory-app>

</midlet>

</J2ME>

What is the importance of analysis in the design of an algorithm?

There are two main reasons we analyze an algorithm: correctness and efficiency.

By far the most important reason to analyze an algorithm is to make sure it will correctly solve your problem. If our algorithm doesn't work, nothing else matters. So we must analyze it to prove that it will always work as expected.

We must also look at the efficiency of our algorithm. If it solves our problem, but does so in O(nn) time (or space!), then we should probably look at a redesign.

What are some examples of simple programs that use different iteration statements to find the average academic marks of 100 students?

struct student
{
nt regno,mark[4],avg;
char name[10];
};
void main()
{
student s[100];
int i,j,t=0;
printf("enter student DETAILES\n");
for(i=0;i<100;i++)
{
printf("ENTER REGISTER NO : ");
scanf("%d",&s[i].regno);
printf("ENTER NAME : ");
scanf("%s",s[i].name);
printf("ENTER FOUR MARKS \n");
s[i].avg=0;
for(j=0;j<4;j++)
{
scanf("%d",&s[i].mark[j]);
t=t+s[i].mark[j];
}
s[i].avg=t/100;
}
printf("THE STUDENTS INFORMATION \N");
for(i=0;i<100;i++)
{
printf("\n REGISTER NUMBER : %d",s[i].regno);
printf("\n NAME : %s",s[i].name);
printf("\n AVERAGE MARK : %d",s[i].avg);
}
getch();
}

Is a transmission method that allows one node to send data to a defined group of nodes?

Multicasting is a transmission method that allows one node to send data to a defined group of nodes. Transmission methods using fiber-optic cables achieve faster throughput than those using copper or wireless connections.

What are the side effects associated with using cramp bark?

Pregnant and lactating women should consult with a medical practitioner before using cramp bark. Considered safe for both short- and long-term use, no known side effects.

A term that describes any program that is intended to cause harm or convey information to others without the owner's permission?

malware or spyware.

malware specifically means a program designed for malicious purposes.

spyware specifically means a program which collects information without the owner's permission.

Spyware does not necessarily have to be malicious in intent, but is still considered "bad" because users feel it invades their privacy.

What are the disadvantages of electronic storage devices?

While there are many advantages to electronic storage devices, there also some disadvantages. The disadvantages include their ability to get a virus, and the technical issues that they can often experience. These issues can be difficult for many users to fix.