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Today, we live in a world where information technology is moving at the speed of light. Communications have been dramatically improved with the invention of computers. Through Internet, communication has been made so simple. For example, with the help of computers, you can send e-mail messages to friends and loved ones within seconds. Online banking, in which you can transfer funds and monitor accounts and transactions, has become very useful too. Students no longer need to write their papers by hand or to use typewriters; instead, powerful word processing software can be used. Other functions of the computer may include online shopping, where you can order goods and get them delivered to your home.
These examples are made possible by software, which are basically computer programs. There are various steps that need to be taken in order to create a computer program. The most important step in programming is to analyze the problem and the reason of the creation of the program. Next would be to outline the problem requirements and then design an algorithm, which is a step-by-step problem-solving process in which a solution is arrived at in a finite amount of time. After this is done, the programmer needs to implement the algorithm in a programming language, such as C++, Q Basic, C, and verify that the algorithm works. The last step a programmer needs to take is to maintain the stability of the program by using and modifying it when necessary.
Analyzing the Problem
The reason this step is very important is because the programmer has to fully understand the problem before trying to solve it. Good understanding of the problem will help in the creation of a more effective program. There are three steps involving problem analyzation
•Thoroughly understand the problem
•Understand the problem requirements. Requirements include whether the program requires interaction from user, whether it manipulates data, and what the output looks like. If the program manipulates data, the programmer should know how the data is represented and in what manner.
•If the problem is very complex, divide the problems into sub-problems and repeat the first two steps of analyzation on each sub-problem.
Designing Algorithm
To design an algorithm is just like making a skeleton outline for an essay. This involves a lot of thinking by the programmer. Once the algorithm is fully designed, the programmer has to check for correctness by using sample data. Another way of checking would be to do some mathematical analysis depending on the situation and the program.
Implementing Algorithm into Higher Level Language
Once the algorithm is designed and completely correct, the next step is to convert it into high-level language. Depending on what programming language, the programmer has to make sure to follow the language's syntax. To verify this, the converted algorithm has to be run through a compiler. When the compiler generates error messages, it means that the programmer has made a syntax error while writing the source code. The programmer then has to go back into the code and identify and change the errors. When all the syntax errors have been removed, the compiler generates the equivalent machine code, the linker links the machine code with the system's resources, and the loader places the program into the main memory so that it can be executed.
Maintaining the Program
The compiler makes sure that the program follows the language's syntax, but it does not guarantee that the program will run correctly. In order to make sure the program runs correctly, the programmer has to do one last step execute the program. During execution, the program might terminate abnormally as a result of logical errors such as division by zero. The program might also generate erroneous results even if it terminates normally. Under these circumstances, the source code, the algorithm, or even the problem analysis has to be re-examined by the programmer to maintain the correctness of the program.
In conclusion, creating a program involves a lot of efforts. Taking careful approach to programming is very advantageous to you. As you can see, programmers spend a considerable amount of time analyzing the problem and designing the algorithm. It is much easier to discover errors if a program is well structured and well designed. Also, do not forget about the main purpose of creating a program and what problem it is designed to solve. If these steps are done carefully and properly, a much better and efficient program will and can be created.
D.S. Malik. C++ Programming From Problem Analysis to Program Design. Course Technology; 1 edition., March 1, 00.Please note that this sample paper on Programming is for your review only. In order to eliminate any of the plagiarism issues, it is highly recommended that you do not use it for you own writing purposes. In case you experience difficulties with writing a well structured and accurately composed paper on Programming, we are here to assist you.Your college papers on Programming will be written from scratch, so you do not have to worry about its originality.
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