In C could you please answer the bottom triangle. The one with 1-15 odd

For the final pattern, ask the user for an odd number between 1 and 15. (Your program should use an input validation loop to restrict valid input from the user to odd numbers between 1 and 15.) If that number is 7, then the diagram appears as follows: Note that, in contrast to the previous diagrams, there are spaces between adjacent asterisks on the first and last lines