C++ programming please

- get the user to enter how many students are in the class - define an array to hold student grades -in values into the array for the amount of students - if the teacher inputs a grade above 100, then 100 is entered eg) 2334 => 100 -if the teacher inputs a negative grade, then O is entered eg) -20976 =>0 - after it's all done, prompt the user to enter an index number to search the array - if the number exceeds the number of students, or it's negative then the index is invalid -otherwise, display the grade, at the index given