Code writing style in a language C++

Code writing style in a languageC++

Principles of writing code inC++

In the beginning, you should know that all you will learn in this lesson is a theoretical explanation of the methods of writing code.
So in this lesson, you will learn how to write codeC++Correctly understood by the computer and understood by anyone trying to read the code that you will write in the future when building your own applications.

Case Sensitivity in C Plus

languageC++apply concepttheCase Sensitivity,This means that it distinguishes between uppercase and lowercase letters.

Example: noteThey Noteare not the same thing.

Strictly Typed in C Plus Plus

languageC++apply concepttheStrictly Typed,This means that the type of the variable must be specified directly when defining it (such as an integer, a character, a decimal number, etc..) and the type of data stored in it cannot be changed later, as is the case in the Java languageCAnd theC#,Unlike some other languages such as Python and JavaScript.

The name of the class in C Plus Plus

It is preferable that the name of the class begins with a capital letter, and if the name of the class consists of more than one word, make the first letter of each word a capital letter.

Examples

• In the event that the name of the class consists of one word.

                    class Car{ }

• In the event that the name of the class consists of more than one word.

                    class CppFirstClass{ }

Variable name in C++

Use lowercase letters when choosing names for variables. If the variable name consists of more than one word, start each word with a capital letter starting from the second word.

Examples

• In the event that the variable name consists of one word.

                    int color;

• If the variable name consists of more than one word.

                    int firstCarColor;

The name of the function in C++

Use lowercase letters when choosing names for functions. If the name of the function consists of more than one word, start each word with a capital letter starting from the second word.

Examples

• If the function name consists of one word.

                    void color();

• If the function name consists of more than one word.

                    void changeCarColor();

Comments on C Plus Plus

We use comments to only make notes about the code we wrote, so we don't forget how we programmed the code in case we want to review or modify it after a long time.
Comments do not affect the written code at all, and in languageC++There are two methods of posting comments:

Comment on one line.
Comment on multiple lines.

Examples

• If the comment consists of one line, we put the // symbol before writing the comment.

                    // this is a one line comment

• In the event that the comment consists of several lines, we start the comment with the symbol /* and end it with the symbol*/ .

                    /*
	  This is multilines comment
	  This is a comment
	  Consists of
	  several lines
	  */

Remember: you are not obligated to put comments in your programs. But we recommend that you always put comments to help you understand the code you wrote.

Characters used to put names inC++

Any name we give to a variable, function, class, object etc.. is calledidentifierin programming.
inC++Each element we want to create we have to give it a special name, that is, we have to specifytheidentifierfor him.
So a distinction is made between the elements inC++Through their names, that is, throughtheIdentifiers.

Mandatory rules when giving names

alltheIdentifiersThey must begin with a capital letter in A-Z, a lowercase letter in between a-z, or a slash_.
prevents starttheIdentifiersby number.
It is forbidden to usetheLiteralswhich valuestrue, false.
It is forbidden to use any of the reserved words(Keywords).
do not forget toC++apply principletheCase Sensitive.

Focus on the first letter only

Examples of allowed nouns : H armash , n ame , _ number

Examples of prohibited nouns : 1 st , - cash , @user

What are the reserved words?C++

All of the following words are reserved for the languageC++, which cannot be usedKIdentifiers.

	  alignas
	   
alignof and
	   
and_eq
	   
auto
	   
bitand
	   
bitor
	   
bool
	   
break
	   
case
	   
catch
	   
char
	
	  char16_t 
	   
char32_t 
	   
class
	   
compl
	   
const
	   
constexpr 
	   
const_cast
	   
continue
	   
decltype 
	   
default
	   
delete
	   
do
	
	  double
	   
dynamic_cast
	   
else
	   
enum
	   
explicit
	   
export
	   
extern
	   
false
	   
float
	   
for
	   
friend
	   
goto
	
	  if
	   
inline
	   
int
	   
long
	   
mutable
	   
namespace
	   
new
	   
noexcept
	   
not
	   
not_eq
	   
nullptr 
	   
operator
	
	  or
	   
or_eq
	   
private
	   
protected
	   
Public
	   
register
	   
reinterpret_cast
	   
requires
	   
return
	   
short
	   
signed
	   
sizeof
	
	  static
	   
static_assert 
	   
static_cast
	   
struct
	   
switch
	   
template
	   
this
	   
thread_local 
	   
throw
	   
true
	   
try
	   
typedef
	
	  typeid
	   
typename
	   
union
	   
unsigned
	   
using
	   
virtual
	   
void
	   
volatile
	   
wchar_t
	   
while
	   
xor
	   
xor_eq

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Code writing style in a language C++