`f(void)` meaning no parameters in C++11 or C?

Question

In C++11 the following function declaration:

int f(void);

means the same as:

int f();

A pa

Answer 1

This comes to C++ from C. In C f() means unknown number and type of parameters. So in C for no parameters there is f( void ).

In C++ it's redundant: f() and f( void ) mean same thing - a function that has no parameters.