Extend your solution to Exercise 7-8 to remove all occurrences of the tautogram’s beginning letter (ignoring casing). You could do it the easy way (remember the Standard Library function you can use...

Extend your solution to Exercise 7-8 to remove all occurrences of the tautogram’s beginning letter (ignoring casing). You could do it the easy way (remember the Standard Library function you can use to accomplish this?), but perhaps it’s more interesting to do it the hard way and write the complete code yourself?