did you ever surf on the help files?

your first code

wdevcguru — Fri, 28 Aug 2009 10:25:56 +0000

Objectives:

Having read this section you should have an understanding of:

1.a preprocessor directive that must be present in all your C programs.

2.a simple C function used to write information to your screen.

3.how to add comments to your programs

Now that you’ve seen the compiler in action it’s time for you to write your very own first C program. You can probably guess what it’s going to be – the program that everyone writes just to

check they understand the very, very, very basics of what is going on in a new language.

Yes – it’s the ubiquitous “Hello World” program. All your first program is going to do is print the message “Hello World” on the screen.

The program is a short one, to say the least. Here it is:

#include

int main()

{

printf(“Hello World\n”);

return 0;

}

Previous: “Computer”?? was ist das bro?

Objectives:

Having read this section you should have an understanding of:

1. a preprocessor directive that must be present in all your C programs.

2. a simple C function used to write information to your screen.

3. how to add comments to your programs

Now that you’ve seen the compiler in action it’s time for you to write your very own first C program. You can probably guess what it’s going to be – the program that everyone writes just to check they understand the very, very, very basics of what is going on in a new language.

Yes – it’s the ubiquitous “Hello World” program. All your first program is going to do is print the message “Hello World” on the screen.

The program is a short one, to say the least.

Here it is:

#include

int main()

{

printf(“Hello World\n”);

return 0;

}

“computer” ?? wass ist das bro?

wdevcguru — Fri, 28 Aug 2009 10:12:04 +0000

Previous: overview

PS: If I were you, I would skip this page

A computer is a device that accepts information (in the form of digitalized data) and manipulates it for some result based on a program or sequence of instructions on how the data is to be processed.

Complex computers also include the means for storing data (including the program, which is also a form of data) for some necessary duration. A program may be invariable and built into the computer (and called logic circuitry as it is on microprocessors) or different programs may be provided to the computer (loaded into its storage and then started by an administrator or user). Today’s computers have both kinds of programming.

Most histories of the modern computer begin with the Analytical Engine envisioned by Charles Babbage following the mathematical ideas of George Boole, the mathematician who first stated the principles of logic inherent in today’s digital computer. Babbage’s assistant and collaborator, Ada Lovelace, is said to have introduced the ideas of program loops and subroutines and is sometimes considered the first programmer.

Apart from mechanical calculators, the first really useable computers began with the vacuum tube, accelerated with the invention of the transistor, which then became embedded in large numbers in integrated circuits, ultimately making possible the relatively low-cost personal computer.

Modern computers inherently follow the ideas of the stored program laid out by John von Neumann in 1945. Essentially, the program is read by the computer one instruction at a time, an operation is performed, and the computer then reads in the next instruction, and so on.

Recently, computers and programs have been devised that allow multiple programs (and computers) to work on the same problem at the same time in parallel. With the advent of the Internet and higher bandwidth data transmission, programs and data that are part of the same overall project can be distributed over a network and embody the Sun Microsystems slogan: “The network is the computer.”

Next: your first code

Overview

wdevcguru — Fri, 28 Aug 2009 08:51:32 +0000

C is a general-purpose computer programming language developed in 1972 by Dennis Ritchie at the Bell Telephone Laboratories for use with the Unix operating system.

Although C was designed for implementing system software, it is also widely used for developing portable application software.

C is one of the most popular programming languages.

It is widely used on many different software platforms, and there are few computer architectures for which a C compiler does not exist.

C has greatly influenced many other popular programming languages, most notably C++, which originally began as an extension to C.

“Computer”?? was ist das bro?