Design and write a program, using functions, that calculates the area and perimeter of a rectangle whose dimensions (length and width) are provided by a user. Please write this in C code. There must be a function in the code. Also, please provide the Pseudocode. This should not be an overly complicated code. I will run the code in ideone.com. If you run it on ideone.com, please select "secret" so no one else is able to view it (the button that looks like a pair of glasses).