I was recently reading a post titled Constructor Overloading that talked about how a programmer could overload the built-in variables. It made me wonder if the same was true in c++, however I haven’t found anything on the topic in the past. I do know that the built-in variables in C++ are called “variables”, but I can’t really think of the term for variable overload.
There is a bit of a technical difference between “built-in variable” and “variable”, but the definitions are nearly the same.
Built-in variables in C are called variables by default. You can change this by passing them an argument, but they are also declared. They are not variable but just the same. The variables in a function are declared, and you can declare more than one variable.
I don’t really know what “variable” means but I can’t say I can define one. The built-in variables in C are called variables by default because they are already variables, but they are declared. The variable in a function is also a variable, but declared.
The variable is not a built-in variable. Built-in variables are also variables, but declared, not declared, as per default. The variable declared is a variable, but it is not a built-in variable.
I know I’m not the first person to point out that “variable” is a pretty poor name for a built-in variable. I know I’m not the first person to point out that “variable” is a pretty poor name for a built-in variable.
The point is that you can’t declare a variable that is a built-in variable. So a variable is, in essence, just a variable. So then, why should you ever use a variable that is not a variable? To declare a variable, you must be explicit that you are going to be using that variable. So a variable is basically just a variable, which is a pretty poor name for a variable.
In the context of C++, you don’t need to be explicit about it. You just declare a variable whenever you use that variable, and you can use that variable in any other function. In fact, if you use a variable in the wrong way, like trying to use it to store an integer, you’ll get an error right away.
I would say that the use case of a constructor is a pretty rare one. The main reason you’re declaring a constructor is to provide a default for the variable you’re going to be using. So in the case of the constructor, you’re using a variable that is not going to be used anywhere else. It’s the default value that you’re using. It’s not like you don’t need a default value for variables.