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raghavmcs
Active User
Joined: 14 Jul 2005
Posts: 105
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Dear Experts,
I do not have much knowledge of REXX.If someone can give me a piece of code for following will be great.
a)Say 123456789 is a ninie digit number.I want this number to be taken from the user and then
Getting the second last digit like in this case its 8.
Next step is adding 1 to it which maked 9 in this case
Display the outout 9 in this case
But there is an exception of output and that is for
when the second digit from last is 9.IN this case 9+1 will make 10.But in this case the output should be 0.
I know that its easy task for someone who knows REXX.I have to get this done urgently and my current REXX skill are not helping me out to get this.
Hope I am not bugging any of the experts here,thanks |
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enrico-sorichetti
Superior Member
Joined: 14 Mar 2007
Posts: 10873
Location: italy
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homework ??
what did You try, up to now,,,
post something ( even errors ) and somebody will be glad to advice |
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raghavmcs
Active User
Joined: 14 Jul 2005
Posts: 105
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| I tried Stem concept.Bust stuck next,anyway I feel like you want me to learn REXX and be the expert :-) |
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raghavmcs
Active User
Joined: 14 Jul 2005
Posts: 105
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I was trying like this.Please do not see the digits and the number of digits.
Not sure am on right track to achieve this
VAR1=RIGHT( '102301123',2)
VAR2=RIGHT('VAR1',1)
VAR3=VAR2+1
SAY VAR1
SAY VAR2
SAY VAR3 |
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enrico-sorichetti
Superior Member
Joined: 14 Mar 2007
Posts: 10873
Location: italy
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first of all, where did the assignment come from ??
( it does not make too much sense ) |
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Douglas Wilder
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Joined: 28 Nov 2006
Posts: 305
Location: Deerfield IL
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It look like you are coming along fine on coding this.
To be on the safe side it is good for the first line of a REXX to contain /* REXX */.
If you need to get the input from the keyboard try using "Parse Upper Arg".
For your exception processing use an "IF THEN ELSE".
There is no batter way to learn any programming language than to try it, and when needed get pointers (not the answers) from someone else who knows the language. |
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expat
Global Moderator
Joined: 14 Mar 2007
Posts: 8797
Location: Welsh Wales
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| raghavmcs wrote: |
I was trying like this.Please do not see the digits and the number of digits.
Not sure am on right track to achieve this
VAR1=RIGHT( '102301123',2)
VAR2=RIGHT('VAR1',1)
VAR3=VAR2+1
SAY VAR1
SAY VAR2
SAY VAR3 |
Unfortunately, the syntax is almost correct but the logic is not. The logic will return the LAST digit from the string.
Syntax - Where you have VAR2=RIGHT('VAR1',1) by enclosing the word VAR1 in quotes you are using a literal rather than the value stored in the VAR1 variable.
Logic - Try this
| Code: |
VAR2 = LEFT(VAR1,1)
VAR3 = VAR2 + 1
IF VAR3 > 9 THEN VAR3 = 0
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ofer71
Global Moderator
Joined: 27 Dec 2005
Posts: 2358
Location: Israel
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Another version:
| Code: |
/* REXX */
A = '123456789'
B = RIGHT(SUBSTR(REVERSE(STRIP(A)),2,1)+1,1)
SAY A
SAY B
EXIT
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O. |
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Pedro
Global Moderator
Joined: 01 Sep 2006
Posts: 2547
Location: Silicon Valley
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O.'s example works. But in instances like this, I prefer using the PARSE instruction:
| Code: |
/* REXX */
A = '123456789'
PARSE VAR a 8 b 9 .
SAY A
SAY B
EXIT |
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