Write a C function, with appropriate comments to explain how your code works, to scan a null-terminated string and return a pointer to the first "non-whitespace" character in the string. If the string is entirely whitespace, then return a pointer to the terminating null character. For this exercise, whitespace includes spaces, tabs ('\t'), newlines (' '), and shell-style comments (between "#" and newline). The function prototype should be const char* skipSpaces (const char* buffer); and as an illustrating example, should return the following pointers p for the buffers shown below: " \t 4" buffer p "# All whitespace buffer P " \t # This is a comment # Another # one here \t %#" buffer P You may not call any other functions, except for helper functions you provide. You will lose points for inefficiency (e.g., scanning the string more than once).