Create two functions using Fortran : Factorial and Area. The factorial function is a recursive function. It calculates the n! as n*(n-1)*(n-2)*...*3*2*1. The area function takes two real number parameters: length and width. It returns length*width. In the main subprogram, ask the user to enter the length and width of a rectangle, then display "The area is " and display the area using the area( ) function. After that, ask the user to enter a non-negative integer n, display n! by calling the fac function.

Create two functions using Fortran : Factorial and Area. The factorial function is a recursive function. It calculates the n! as n(n-1)(n-2)...3*21. The area function takes two real number parameters: length and width. It returns lengthwidth. In the main subprogram, ask the user to enter the length and width of a rectangle, then display "The area is " and display the area using the area( ) function. After that, ask the user to enter a non-negative integer n, display n! by calling the fac function.

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter6: User-defined Functions

Section: Chapter Questions

Problem 23PE

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