NECESSITY OF DEVELOPING A COMPUTER PROGRAM

Why it is necessary to develop a computer program in a systematic way and what are the different kinds of programming tools used in a program design process?


A program development requires systematic methods because there are different phases of system or program development which we should follow in a stepwise manner.

At the very first phase detailed analysis of the system is done.Without knowing the requirement of the user or without preparing a detailed system specification we cannot develop a program.We should know what can be the probable inputs and possible outputs of the system.If a program is developed with knowing these requirements then the program may not meet the objective of the user an be useless.

After preparing system specification if with prior planning like the technical manpower needed to make the system,its duration and money required we cannot start making the program.If it is impossible to make such system or there is no manpower to make the system then it would be useless to start developing it.The system should not take proposed time and money otherwise the developer may be in loss after making the system.

At the third phase designing of the system is very important.A good design leads to a good program.Without designing we cannot start coding the program.A bad design leads to bad programming and we will thus suffer later while coding.

After designing coding is done and then the testing of the system is done to verify whether the system fulfills the needs of a user or not.Without a system is ready we cannot test it only test cases can be prepared.Hence all the steps should be followed strictly in a stepwise manner.We cannot escape any step while making a system.

The different programming tools used in program design are pseudocode,algorithm or flowchart.