#include

#include

double findAvg(int [], int); /* fctn ptype (arrayName, arraySize) */

double stdDev(int [], int, double); /* fctn ptype (arrayName, arraySize, average */

void entvals(int[], int); /* arrayName, arraySize */

int main()

{ #define NUMELS 10 int values[NUMELS] ;

double average, stddev;

entvals(values, NUMELS);

Using C

Write a main program that prompts the user to enter a fixed number of integer data items using the keyboard and stores them in an array.

a. The program should then display all entered array elements with each element name and value on a separate line.

b. The program should then call 2 functions:

i. The first function returns the average of the values in the data array

ii. The second function uses the average above to calculate the standard deviation of the array values. Note that the user data acquisition task can also be written as a function.

2) Average calculation:

a. Use the usual sum of all elements divided by the number of elements to calculate the average

3) Standard Deviation calculation:

a. Subtract the calculated average from each array value. The result is a new set of array values, each called a deviation.

b. Square each deviation.

c. Take the average of the squared deviations, as in step 2.

d. Take the square root of the result of step c (above). This is the Standard Deviation.

e. Use double precision for calculation variables, and integers for indices.

4) Display the Average and Standard Deviation

5) Loop the program continually so new arrays can be entered.