Nothing.
You are referring to default arguments. However, C does not support default arguments. That's a C++ feature.
In C, there is no default value for formal parameters. In C++, there can be, but the value is whatever you declare in the function declaration.
Any constructor that can be invoked without explicitly passing any arguments is a default constructor. Note that there can be only one default constructor so there can only be one constructor where all arguments have default values or one constructor that has no arguments, but not both. A constructor where all arguments have default values is a useful means of combining two or more constructors into a single default constructor, thus reducing verbosity and code duplication.
Gand mrao
There is no such thing as a default parameterized constructor. The default constructor is always the 'no-arg' constructor and does not take any parameters or arguments as input
An empty constructor takes no arguments and calls the default constructor
I guess you mean C++, not C.Data fields of a structure/union are public by default,those of a class are private by default.
The default constructor of a stack is empty because the default value of any container, including a linked list, is an empty container which requires no arguments (all members default to zero).
No, properties in C do not support arguments like functions do. Properties in C are usually implemented as getter and setter functions, which can modify or return the value of the property.
Default access specifier in c# is private. if you don't specify it automaticaly takes it as private.
Yes, but that means you can't define an instance of the class without arguments to new.
We declare (not use) default arguments in a function whenever the default values cover the majority of calls to that function. We use default arguments in order to simplify those calls and thus reduce the verbosity of our calling code, thus making it easier to call the function.