write the 5 features of programming language
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Answer:
1-Naturalness:
A good language should be natural for the application area for which it is designed.That is,it should provide appropriate operators,data structures,control structures and a natural syntax to facilitate programmers to code their problems easily and efficiently.FORTRAN and COBOL are good examples of languages possessing high degree of naturalness in scientific and business application areas,respectively.
2-Abstraction:
Abstraction means ability to define and then use complicated structures or operations in ways that allow many of the details to be ignored.The degree of abstraction allowed by a language directly affects its ease of programming.For Example,object-oriented languages support high degree of abstraction.Hence,writing programs in object-oriented languages is much easier.Object-oriented also support re usability of program segments due to this feature.
3-Efficiency:
Programs written in a good language are translated into machine code efficiently,are executed and require relatively less space in memory.That is,a good programming language is supported with a good language translator (a compiler or an interpreter) that gives due consideration to space and time efficiency.
4-Structured Programming Support:
A good language should have necessary features to allow programmers to write their programs based on the concepts of structured programming.This property greatly affects the ease with which a program may be written.,tested and maintained.More over,it forces a programmer to look at a problem in a logical way so that fewer errors are created while writing a program for the problem.
5-Compactness:
In a good language,programmers should be able to express the intended operations concisely without losing readability.Programmers generally do not like a verbose language because they need to write too much.Many programmers dislike COBOL,because it is verbose in nature (Lacks Compactness)
6-Locality:
A good language should be such that while writing a program,a programmer need not jump around the visually as the text of a program is prepared.This allows the programmer to concentrate almost solely on the part of the program around the statement currently being worked with.COBOL and to some extent C and Pascal lack locality because data definitions are separated from processing statements,perhaps by many pages of code,or have to appear before any processing statement in the function/procedure.
7-Extensibility:
A good language should also allow extensions through a simply,natural and elegant mechanism.Almost all languages provide subprogram definition mechanisms for the purpose,but some languages are weak in this aspect.
8-Suitability to its Environment:
Depending upon the type of application for which a programming language has been designed,the language must also be made suitable to its environment.For Example, a language designed for a real-time applications must be interactive in nature.On the other hand,languages used for data-processing jobs like payroll,stores accounting etc may be designed to operative in batch mode.
Ahsan Hassan at 02:57
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