Computer Programming Languages: An Introduction
Computer language is a formalized, controlled vocabulary that contains a set of grammatically correct rules. The computer can understand a programming language, just like a speaking or writing language for humans. Computers use those languages to perform particular tasks in a specific way. The categorization of programming language includes semantics (meaning) and syntax (form). Programming languages create programs while expressing algorithms and controlling the machine’s behavior.
Procedural Programming
The majority of these languages rely on the procedural format. Meaning they allow the specification of the sequence of procedures within computer programming. Designing these languages enables communication between humans and machines and solves difficult tasks and complex problems while making computers efficient in solving problems alone. Programming languages existed from as early as the 1800s. As a result, currently, there are several programming languages, such as C, C++, Java, C#, Python, and JavaScript, among others, that enable the computer to execute the programming. Moreover, many programming languages in the recent past are connecting with AI as a priority. One such example is the LISP, which occupied most of the market share during the initial decades of AI.
Purpose of Programming Language
Programming languages were mainly to give instructions to the computer. However, compared with human-speaking languages, programming languages require more completeness and precision. For example, while speaking, if humans make some grammatical errors, another person still has a chance to understand the conveyed meaning correctly. In contrast, computers will execute instructions as specified in the programming language without any deviation, allowing errors to crop up during program execution. For this cause, the program should be correct in all formats to get an error-free output.
Categorization of Programming Languages
The categorization of programming languages includes low-level, assembly, high-level, scripting, and object-oriented programming languages.
Low-Level Programming Languages:
Low-level programming language is also known as machine code, a basic instruction given to the computer. This machine code is mandatory while providing instructions to the computer, as it is difficult for a computer to understand user-based languages such as English or another one. Most importantly, low-level languages help interact with the computer’s hardware. They enable management, syncing, and operation with all the system’s hardware components. Also, they aid in handling all the instructions given to the hardware systems. The most basic machine language is machine code or byte code. The intention of developing machine language is to communicate even with the basic types of computers. This language uses machine or binary code comprising -1 and 0 digits alone.
Assembly Language:
This language is a modification of machine language, where one can use additional characters and numbers together. While numbers alone are used in machine language, the extra characters include symbols, names, and English words in assembly language. This type of language is a fundamental computer language, which any processor can operate.
High-Level Language:
High-level languages employ programming languages such as Pascal, C++, and FORTRAN. First, the programmer can write suitable programs to run across all systems and computers. Then, all the instructions used in the programming or high-level language get converted into the binary format or machine language to make the computer understand.
Scripting Languages
Due to the use of high-level construct, interpreting and executing can be done for a command. Compared to compiled languages, scripting languages are easier to learn and execute. Some of the examples of Scripting Languages include JavaScript, AppleScript, Pearl, etc.,
Object-Oriented Languages
The high-level programming languages that focus on ‘Objects’ are object-oriented. In this kind, the focus is on data rather than logic during program execution. As a result, the programmers concentrate much on the object while manipulating. Some examples include Python, Java, C, C++, Swift.