Question

what is meant by function prototype​

Answer 1

Answer:

a first or preliminary version of a device or vehicle from which other forms are developed.

Answer 2

$\textsf{\large \textbf{Short}}$

  $\text{It refers to the \textit{return-type}, \textit{function-n\symbol{97}me} and the \textit{parameter-list}.}$

$\textsf{\large \textbf{Long}}$

  $\text{A function prototype or a function interface is a declarartion of a function}\\\text{that specifies the function's n\symbol{97}me and type signature (number of}\\\text{parameters, data types of parameters, and return types of parameters),}\\\text{but omits the function body.}$