20 student apply an exam, the mark of the exam is out 10, write a C++ program to do the following:

1- read students grades and store in student _ grade array.

2- find the frequency (number of occurrences of each grade.

3- find the mode (number that occurs most often, for example, 1,1,1,2,3,3,4,5

1 is the mode.

4-calculate the mean.

5- print the result as follows:

for example

Student grade Frequency

------------------------------------

0 1

2 0

3 2

4 5

mode: --

mean:--

thank you