The document provides function prototypes for three functions: 'area' that takes two integer parameters and returns an integer, 'showmenu' that does not take parameters and has no return value, and 'convert' that takes a float parameter and returns a char. Each function prototype is presented in a concise format without the implementation details. The prototypes serve as a reference for defining these functions in a programming context.

1. Write a function prototype for each of the following functions: (Just the line, not the body.)
1.) function area that takes two values of type in as parameters, called side1 and side2 and
returns a value of type int as its results.
2.)function showMenu that does not receive any parameters and does not return a value.
3.)function convert that takes a float parameter, called number, and returns a value of type char
as its results.
Solution
1.) function area that takes two values of type in as parameters, called side1 and side2 and
returns a value of type int as its results
sol:int area(int side1,int side2);
2)function showMenu that does not receive any parameters and does not return a value.
sol:void showMenu();
3)function convert that takes a float parameter, called number, and returns a value of type char as
its results.
sol:char convert(float number);