The purpose of this assignment is for you to use functions and libraries of functions as well asworking with fixed length one-dimensional arrays.Please note: You code will be checked for originality. If you use someone else's code or codetaken from the Internet then your prac will come under scrutiny for a potential copy, which mayresult in zero marks begin awarded.Required knowledge for the prac.This prac refers to horizontal and vertical histograms. For the purposes of this prac a horizontalhistogram uses bars that travels from left to right and a vertical histogram refers to a histogramwith bars that travel from the bottom upwards. See the following diagrams that depicts thisconcept:|@ ! # @ ! # @ ▪ è @10 217 9 413 915111113 615 31214 211 8 8910111213141516171819The diagram on the left is an example of a horizontal histogram. The one on the right is anexample of a vertical histogram for the same data set.###非 ProgramFor this program you must make use of user defined libraries with functions defined anddeclared in the GraphSpace namespace. Activities and functions in the program should makeuse of a fixed length array of twenty (20) whole numbers.Write a C++ program that will accomplish each of the following requirements:1. The program should make use of a menu system. Each menu option can roughly bemapped to the rest of the requirements in this list.2. The user must have the ability to initiate a process in the program to reset the valueof each array item to zero.3. The user must allow the program to fill an array with random whole numbers inbetween a lower bound number and upper bound number provided by the user.4. The user must have an option that will force the program to output a horizontalhistogram of the array values.5. The user must have an option that will force the program to output a verticalhistogram of values in the array.6. The program should run until the user specifically chooses to quit the program.7. The histogram bars must use three different characters, depending on range ofvalues in the histogram.a. Bars that indicate values in the bottom third must use a '!' character.b. Bars that indicate values in the middle third must use a @ character.c. Bars that indicate values in the top third must use a '# character.

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