Random example, function with two parameters:
int main (int argc, char **argv) {...}
Manipulators are functions that change the formatting parameters on character streams.
multiple means multiple, plus means plus.
In the Photos app, in the top left corner is the "plus" icon. Tapping on that will let you create multiple photo albums.
Yes, there can be friend functions in C++.
Of course they are used. Both stand-alone and class-member functions are used in C++.
Many different functions can perform calculations or operations. Excel comes with hundreds of them. They can be accessed by clicking on the fx icon. The most commonly used function is usually the SUM function. It is generally used to add a range of values, but it can be used to do other kinds of calculations. It can be accessed by clicking on the Σ character on the toolbar.
No, they are functions. Operators are -> or ++or /=
One.
The parameters of the underlying distribution, plus the standard error of observation.
The "plus sign" (+) is an operator that, by default, takes the left and right operands as parameters, and returns the sum of both operands as the return value.
In C++, methods are simply class member functions.
A singleton.