View difference between Paste ID: 2McAaFzc and QS1uBRCf

 // Author: Anton Xue 	K26
 // finds sum, average, and standard deviation for an array of numbers entered
 
 /*
 Sample run:
 
 Enter number of elements: 6
 Enter element number 1: 9
 Enter element number 2: 2
 Enter element number 3: 4
 Enter element number 4: 5
 Enter element number 5: 7
 Enter element number 6: 12
 Total sum: 39
 Average: 6.5
 Standard deviation: 3.61939
 
 */
 
 #include <iostream>
 #include <cmath>
 using namespace std;
 
 int main() {
 
     // prompt user for input of number of elements and store it in a variable
     int size;
     cout << "Enter number of elements: ";
     cin >> size;
 
     // tell user to input that many elements and store them in an array
     double elements [size];
     for (int i = 0; i < size; i++) {
         double user_input;
         cout << "Enter element number " << (i + 1) << ": ";
         cin >> user_input;
         elements[i] = user_input;
     }
 
     // calculate the average of the array
     double average;
     double total_sum = 0;
     for (int i = 0; i < size; i++) {
         total_sum = total_sum + elements[i];
     }
     average = total_sum / size;
     cout << "Total sum: " << total_sum << endl;
     cout << "Average: " << average << endl;
 
     // calculate the sum of each element's difference from the average squared
     double difference_sum = 0;
     for (int i = 0; i < size; i++) {
         double difference_squared = pow((average - elements[i]), 2);
         difference_sum = difference_sum + difference_squared;
     }
 
     // apply the standard deviation formula
     double stdev = sqrt(difference_sum / (size - 1));
 
     cout << "Standard deviation: " << stdev << endl;
 }