Thread: Dealing with the end of an Array

k is an int between 0 and 25 (letters of the alphabet).

Code:

in a for loop that increments i

   int temp = message[i];
   temp = temp+k;
   message[i] = temp;

What I'm doing is a letter shift. A=0, B=1, C=2, etc. If k is 0, message[i] remains the same. if k is 1, message[i] is moved from letter 1 (lets say A) to letter 2 (B).

Here is a hypothetical situation to illustrate my problem:

k = 25
message[i] = Z

ASCII value of 90 + 25 = 115, a lower case "s".

What I'd do is print out all Upper case letters. So if message[i] reaches 90 it returns back to 65 (A) and increments from there. (In this example that would result in Z translating to 85, the letter U).

Any ideas?