Write and compile the C++ programs in lenux (g++) Comment.

equation for the 1st one is n(n+1)/2

Write a C program to find the sum and average of first n natural numbers. The user inputs the value of n. Comment your C code. Write a C program to find the largest and smallest of n non-zero positive integers. The user will input the value of n followed by each of the n values. Comment your C code. Write a C program to find factorial of an integer n. The user inputs the value of n. Do not use recursion. Comment your C code