Write a C-program that asks the user for an integer n, where 3 < n < 20. If n is an odd number, output an X with n asterisks as its cross members. If n is an even number, output an equilateral triangle with n asterisks as sides. Be sure to neatly format your output. Use looping structures to produce the X and triangle. Your program should not need more than 2 if-statements. An example of the output is as follows: n = 5 n = 6 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *