The programming is the process of creating software . This definition
can be interpreted as follows. Programming is nothing more than an explanation
to the computer of what, in what form and how to reach the user. In other disagreements,
it is a kind of art of translating a person's wishes into machine language.
The essence of programming
The main idea is to generate an algorithm and translate it into a
programming language . The development guide is often advised to begin
developing a program by answering the question: Is it possible to implement
this task on a scheduled basis? For example, even today a computer cannot be
made to predict what will happen in a few days. And even if this example is not
entirely correct, because this task is impossible in principle. However, if the
task is limited to predicting the behavior of some currency on the exchange, such
task is solved with the help of a sufficiently complex algorithm and a large
experimental database.
Algorithms
Once the conclusion has been made on the possibility of implementing the
software in a task, it is necessary to build an algorithm for its solution. In
other words, it is required to describe the sequence of steps to solve the task
in maximum detail, taking into account all possible branches, cycles and
errors. In fact, an algorithm can be built for the simplest daily operations.
For example, the algorithm of tea preparation can be described:
1. Open
the kettle.
2. If
nearby is no water in the kettle, it should be added.
3. Put
the kettle on the gas stove.
4. Open
the gas.
5. Light
the fire.
6. Wait
for the water in the kettle to boil.
7. Place
the tea envelope in the cup.
8. Pour
the hot water from the kettle into the cup.
This algorithm is not universal, but for a person who prepares a cup of
tea because he has a gas stove, this whole process is valid.
There are several ways to describe the
algorithm :
• Chart
(schematics).
• Verbal.
• Pseudocode.
• Program
code
Programming languages
In fact, a programming language is a set of rules for describing
predefined commands and functions. Each programming language limits the
developer to a strictly predetermined set of keywords and commands that can be
used in development. There are several levels of languages between which they
are distinguished:
• Low-level
(assembler) : works directly with processor commands.
• High-level
(C ++, C #, Java, etc.) - It's more like an ordinary language.
During the development of a software product, different levels of
abstraction can be distinguished. That is, objects in the real world can be
represented differently. Depending on it, programming languages are divided
into the following types:
• Procedure
: the solution of the task is determined step by step, the whole system is
divided into a series of related procedures.
• Object-oriented
: the program is developed as a set of interrelated objects, each of which can
generate a large number of concrete implementations.
• Declarative
: they are the languages of the description of the problem and the expected
result.
Object-oriented programming
This approach involves developing a program as a system of objects, each
of which reflects one or another object from the real world. Objects in the
real world correspond to classes. And from each class, in turn, innumerable
objects can be generated. For example, if a database is developed for a car
workshop, the classes will be: car, engine, suspension, body, brake system and
other spare parts. And the objects of the class are the specific models of
these parts, which are used in the process. @ Read More thetechcertified weeathicwearfashion
