C++ problem using xcode

Part II: (70 pts) Letter grades are sometimes assigned to numeric scores by using the grading scheme known as grading on the curve. A letter grade is assigned to a score by the following table: Here m is the mean score and ? is the standard deviation. For a set of numbers x', x2, defined as follows. Use #include for access to the sqrt function. xn these are i-1 i-1,p eight numbers, filling the array with values from the keyboard. This problem should use an array to st Output should be neatly formatted using field widths and precision of one decimal place. See sample output below for the data set to be used. The programmer name should display on the first line. You should make use of the following functions to perform calculations. double mean (double valuesI, int size); PRE: 1size8 POST: return the arithmetic average of numbers in array double stddev (double values I, int size, double m); f PRE: 1size