Please use C programming 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 (xi 7)? n-1 S = sample variance Ti = the value of the one observation = the mean value of all observations n = the number of observations Do not use any built-in functions for calculating sum, average and variance in your code