&nbsp;Write a complete C++ program that will randomly generate 20 integers between the ranges 60 – 100 and store the result in an array. The program should consists of the following functions to test out the array:a.&nbsp;will return the largest number of the array.b.&nbsp;will return the smallest number of the array.c.&nbsp;will return the average of the number of the array.d.&nbsp;will return the smallest gap in between the adjacent entries of the array. (A gap between two numbers is the absolute value of their difference)e.&nbsp;will return the sum of gaps between adjacent entries of an array.The main program should be similar to below:int main() {int array[20] = { };// initialize all the value of the array;&nbsp;<<&nbsp;(array, 20) <<&nbsp;;&nbsp;<<&nbsp;(array, 20) <<&nbsp;;&nbsp;<<&nbsp;(array, 20) <<&nbsp;;&nbsp;<<&nbsp;(array, 20) <<&nbsp;;&nbsp;<<&nbsp;(array, 20) <<&nbsp;;}