Expert answer:Create a C++ class Rectangle.

Solved by verified expert:Create a C++ class Rectangle. The class has attributes length and width, with defaults to
1.0. It has member functions for calculating the perimeter and the area of a rectangle. It has
setLength, setWidth, getLength, and getWidth functions for updating and accessing
the length and width values. The set functions should verify that length/width are each
floating-point numbers greater than 0.0 and less than 20.0. If an invalid value is encountered, the
corresponding set function should return –1 to the calling function without changing the
length/width values. Implement a main function that takes a data file name from command line
argument. The main function reads the length and width values from this input file and use the
Rectangle class to calculate the perimeter and area for each data set. (Note: the Rectangle
class should not include any I/O codes. All I/Os should be done external to the Rectangle
class). Source Files: ● Rectangle.h – contains the Rectangle class declaration. ● Rectangle.cpp – contains the Rectangle class implementation. ● hw04.cpp – contains the main function and any other functions for file I/Os. Example Output: % cat hw04.dat
3.456 2.89 0.0 2.90 12.898 20.0 -1.234 13.234 1.0 21.345 % hw04 Usage: hw04
% hw04 hw04.dat foobar.dat Usage: hw04 % hw04 hw04.dat
INPUT: Length = 3.456 Width = 2.890 PERIMETER: 12.692 AREA: 9.988 INPUT: Length = 0.000 Width = 2.900 ERROR: Invalid length: 0.000 INPUT: Length = 12.898 Width = 20.000 ERROR: Invalid width: 20.000 INPUT: Length = -1.234 Width = 13.234 ERROR: Invalid length: -1.234 INPUT: Length = 1.000 Width = 21.345 ERROR: Invalid width: 21.345Submission:Turn in the printout of the program and input data file with at least 3 sets of length/width values.Capture the source code and output into a single file

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