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Hi Don,
Does anyone know of a method to increment a character value . For instance I want to increase the value 'A' to be the value 'B'.
The trouble with your question is that it can be interpreted two different ways. Either you want to increase the EBCDIC value of the letter by 1, or you want to move to the next letter in sequence. Your message wasn't specific.
The EBCDIC value of A is 193. Adding 1 will give you 194, which is B. However, the EBCDIC value of I is 201, adding 1 would yield 202 which is _not_ J. (J is 209).
So it's not clear to me what precisely you're looking for. To add to the EBCDIC value of a character, overlay the character with binary number. When you add to the binary number, you change the EBCDIC value. For example:
midrange.com
D ds
D char 1A
D val 3U 0 overlay(char)
/free
char = 'A';
val = val + 1;
// char is now 'B'
/end-free
If you want the next alphabetic character without regard to the EBCDIC
sequence, then load all of the letters into an array and add 1 to the
array position:
D alphabet s 26A inz('ABCDEFGHIJKLM-
D NOPQRSTUVWXYZ')
D char s 1A
D val s 10I 0
/free
char = 'I';
val = %scan(char:alphabet);
val = val + 1;
char = %subst(alphabet:val:1);
// char is now J
/end-free
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