*NOTE THIS PROGRAM HAS TO WORK FOR ANY LETTER ENTERED A-Z, NO EXTRA PRINTING OR UNDER PRINTING FOR EACH ENTRY*

Suppose you are given a function with the following declaration:

void printSp(int); /* prints specified number of spaces */ Write a function named printTri that takes a single argument, a character, and returns an integer value. If the character is not a capital letter (between 'A' and 'Z'), then the function simply returns 0. Otherwise, if it is a capital letter, the function will print a triangle of characters that looks like this: A ABA ABCBA ABCDCBA

....

ABCDEFGHIJKLMNOPQRSTUVWXYZYXWVUTSRQPONMLKJIHGFEDCBA

NOTE: WIth a fixed-width font, the center letter in each row would line up. Write this out for yourself on paper, to figure out how many spaces should be printed on each line before the characters start. The bottom line has zero spaces. How many spaces should the top line have? The letter passed in becomes the highest letter in the triangle. For example, to print the triangle above, the caller passes in 'D'. After printing, the function returns the total number of non-space characters printed. For example, for the example triangle above, the function must return 16. You must call the printSp function, once per line, as part of your solution. (NOTE: Call printSp for every line, even when the number of spaces to print is zero.