c language

Question 3 (25 points) Declare an integer array of size 10. Ask the user to populate the array and then calculate the following by reading the numbers from the array: sum of the elements in the array, average of the elements, variance of the elements Then display all of the above on the screen on a separate line. Use the following formula to calculate variance: S2 (x - 72 n-1 Sesample variance 2 the value of the one observation the mean value of at observations The number of observations Do not use any built-in functions for calculating sum, average and variance in your code