A prototype in C++, as well as in C, is a declaration of a function and its parameters, including the types of the function and parameters. It does not actually create (define) the code for the function - it only identifies (declares) it to the compiler.
It is used to enforce type checking for functions and parameters, and it is used to declare the function for use in other code prior to the function actually being defined, such as in a different compilation unit or library. Headers, for instance, contain mostly prototypes.
Prototyping is optional in C, though highly recommended.
C is a systems language for precise, concrete development. BASIC and its derivatives are teaching and prototyping languages for rapid, abstract development.
C: there are no methods in C. C++: no.
c is procedure oriented and c++ is object oriented & much newer.
If a + b + c + d + 80 + 90 = 100, then a + b + c + d = -70.
Prototyping is optional in C, though highly recommended.
b+b+b+c+c+c+c =3b+4c
c + c + 2c + c + c = 6c
b + b + b + c + c + c + c = 3b + 4c
4c
c + c + c + c + c = 5 * c.
There are no "primary and secondary keys" in c and c plus plus.
C is a systems language for precise, concrete development. BASIC and its derivatives are teaching and prototyping languages for rapid, abstract development.
3c
There is no such thing as 'unix C++'.
They do exist in C and C++.
One advantage of prototyping is the fact that you can make changes to the model before building the actual model. One disadvantage of prototyping is that it can take too long.