Need help with writing this program in C. Please use functions.

sing.c-This program is from last week, only we are now using functions. Recall that the me mnu ads strings from standard input until end-of -file, and then prints out the letters that were not seen in the input. program reads strings from standard i ou must handle both upper- and lower case letters, as well as ignoring anything that is not a letter void incrementCounts ( char [ 1, int void printMissing( int int main (void) int counts [26] = { 0 }; printf ("Enter some text, ending with char str [100] scanf ("%s", str); while feof (stdin) " incrementCounts (str, scanf("%s", str); counts); printMissing( counts); return 0; | Enter your input : The Quick brown Fox jumps over the Lazy old DOG. Missing letters Enter your input : Yay Crimson Tide! ROLL tide roll!!!! Missing letters: g b hj kpgu v w x z Submit your lab First, on your local machine, compress your lab5 directory into a single (compressed) file. Second, once you have a compressed file that contains your two lab5 programs, submit that file to Blackboard