Code:#include <iostream> using namespace std; int main() { //I'll be making a 1 dimensional array int array1d[25]; array1d[0] = 9; array1d[1] = 8; array1d[2] = 7; array1d[3] = 5; array1d[4] = 3; array1d[5] = 7; array1d[6] = 4; array1d[7] = 7; int array1d_size = 8; cout << "The original array is: { "; for (int i=0; i<array1d_size; i++) cout << array1d[i] << " "; cout << "} " << endl; double the_mean = mean1d(array1d, array1d_size); cout << "\n=====> The mean is: " << the_mean; }