Why only underscore (_) is being used in variable name in programming languages ?

Question

Why only underscore has special place in programming languages why other symbol hasn't have ??🤔

Answer 1

It doesn't mean anything. It is rather a common naming convention for private member variables to keep them separated from methods and public properties. 

Answer 2

But double underscore(__) is reserved in some programming languages what about that?😒

Answer 3

It's not a big issue but I think it's similarity to empty spaces makes it special.

Answer 4

what will you have do?? to know😂

Answer 5

Other symbols like + or * maynbe confused with operators.

Answer 6

You are free to use anything as variable name.. lets test other possibilities:
Justtryusingnone
Or#try#using#other#signs
Maybe!this!looks!better
I_guess_I_will_be_using_underscores_again

Answer 7

There are 3 naming schemes that are commonly used:
CamelCase in most object oriented languages
snake_case in cool languages like C and Python
kebap-case in the superior LISP

Answer 8

Because all programming languages ignoring SPACE so... better understanding of variables names the underscores are useful

Answer 9

No specific reason only identification of variables becomes easy 🤔

Answer 10

Because underscore is not a reserve word we cannot use reserve words as a variable name subtraction sign(-) is reserved for subtraction that is why we cannot use it as a variable name sometimes we use underscore to make our variable in more human readable form ....like choiceinput to choice_input it is easy to read

Answer 11

Because space is counted as a character in c++ but _ (underscore) or any other symbol are allowed in programming.
There are some exceptions in special symbols also..as they have special meaning called keywords

Answer 12

Doesn't Python use "camelspace" e.g. MyVariableName instead of My_Variable_Name?

Answer 13

The compiler in some languages will confuse a "-" as a minus operator.

Answer 14

To increase readability....🙂

Answer 15

Anything except whitespaces and numbers first like 1time onetime*

Answer 16

In most languages, an underscore can be used as part of an identifier (variable name, function name, class name etc) as generally spaces are not a valid part of an identifier.

Answer 17

Hi, What are you working on?