1. The problem statement, all variables and given/known data I have some code and I use getchar to read in some input from the user say a5 I have assigned char letter; int number; letter = getchar(); number = getchar(); so that putchar(letter) prints a and putchar(number) prints 5 but when I try .... letter=letter - 'a'; I am trying to make this my zero index of array.(i should probably also have a minus one ther for zero indexing.) putchar(letter) does not print anything?? I am basically trying to convert the letters into integers so I can use an array with input say [a]. HELPPPPP!!!!!!!