What is prototype of a function in C programming

What is prototype of a function in c
programming?



Declaration of function
is known as prototype of a function. Prototype of a function means



(1) What is return
type of function?

(2) What parameters
are we passing?

(3) For example
prototype of printf function is:



int printf(const char *, …);



I.e. its return type is
int data type, its first parameter constant character pointer and