Comments are entered into the source code, for example, so that you or another developer can continue to understand parts of the code in the future. This makes it possible to write text in the source code that isn’t taken into account by the program. Comments: In all common programming languages, you can comment on lines within the code.When the program ends the loop and runs the rest of the code. A command is repeated until a certain value is reached. Loop: Queries can also be the foundation for loops in a source code.If a particular truth value is entered, then one solution is triggered instead of another. Comparisons: The structure of most programs is built by queries that function on the if-then scheme, i.e.These are referred to within the source code again and again with an assigned name. Variables: Variables are vacancies that can be filled with information.Such commands can, for example, trigger certain calculations or display a text. Here, the programmer makes it clear for their future program what needs to be done. Commands: Instructions are as a rule the basis for all applications.For this reason, certain elements come into use in various different program codes: Very few programming languages appear out of nowhere, though, and most of them build on one another. A similar principle applies for other markup languages, such as XML.ĭepending on the programming language in question, you’re limited to certain conventions when writing a program. An HTML document isn’t a program in and of itself but may contain one, for example in the form of JavaScript Code. For example, using HTML allows you to define headlines, paragraphs, or highlights. A markup language determines how content is structured. However, this is not a case of a programming language but rather the markup language HTML. The foundation of a website is also referred to as a source code. This type of translation attempts to combine the advantages of both variants (quick analysis and quick execution) and is used in browsers, for example, to more effectively handle JavaScript, PHP, or Java. Nowadays, an intermediate solution is being used increasingly often - Just-in-time compilation (JIT). You don’t get to choose, either: each programming language determines whether a compiler or an interpreter is used in combination with it. The translation process is much faster than a compiler but the execution is slower and requires a large amount of memory. Interpreter: An interpreter translates the source code line for line and executes it directly.This machine code is saved in the form of an executable file. Compiler: This application type translates (compiles) the source code into a code that the process understands and can execute.This assistance application can be in either the form of a compiler or an interpreter: Some of the most popular programming languages are:įor the computer to understand these languages, however, they need to first be translated into machine code.įor the computer to be able to further process the source code written by the programmer, there needs to be a translation between the two – this occurs in the form of an additional program. It’s impossible to say for certain which are better or worse, as it depends on the context of the project and the application for which the source code is used. There are hundreds of different programming languages. So, just like a foreign language, one must learn at least one of the various programming languages before being able to program, etc. While computers only work with number values, humans communicate with words. In context, “human-readable” is understood as the counterpart to the term “ machine-readable”. This may sound strange at first since source code could also look like confused gibberish to a layman. While commands were created in this way in the early days of computer technology, we have long since switched to writing applications in a human-readable programming language. A sequence of bits instructs the computer as to what it should do. Computers - regardless of whether it’s a home PC, modern smartphone, or scientific computer - work in the binary system: on/off, loaded/not loaded, 1/0.
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