ADTs, Data Structures, and Problem Solving with C++ 2nd Edition by Larry Nyhoff

تمرين 1

Letter grades are sometimes assigned to numeric scores by using the grading scheme commonly known as grading on the curve. In this scheme, a letter grade is assigned to a numeric score according to the following table:

Here, m is the mean score and ? is the standard deviation; for a set of n numbers x 1 , x 2 ,..., x n , these are defined as follows (where
denotes the sum as i ranges from a to b ):

Write a program to read a list of real numbers representing numeric scores, call functions to calculate their mean and standard deviation, and then call a function to determine and display the letter grade corresponding to each numeric score.