WHILE Statement

[Former Member]

Can anyone help me please? The following program shows error "type L and T are  not compatible"

data: l,                         "leading  characters

        t,                         "trailing characters

        done.                      "done flag

  parameters p(25) default '    Vendor Number'.

  while done = ' '                 "the expression is evaluated first

      vary l from p+0  next p+1    "then vary assignments are performed

      vary t from p+24 next p+23.

      if l = ' ' and t = ' '.

         l = t = '-'.

     else.

         done = 'X'.

         endif.

     endwhile.

write: / p.

[Former Member]

Hello,

What is ur reqirement

Explain in detail......

thanks

Kranthi

[Former Member]

Hello Kranthi,

I want to know why it shows the error. It is supposed to give the following out put

The code in Listing 10.12 produces this output:

    ----Vendor Number    ----

Please check the following link

http://www.sapnet.ru/abap21day/ch10/ch10.htm#UsingtheTTFONTSIZEwhileFONTTTFONTSIZEStatementFONT

[Former Member]

Hi,

You get the type compatible error because the variable ''l'' you have declared is of length 1 and parameter p is of length 25.  Tell us what you are trying to acheive from your above code so we could suggest something.

Best Regards,

Arun Krishnamoorthy

[Former Member]

dear arun,

I have given 25 size to L but it shows the same error. Please check the following link.

http://www.sapnet.ru/abap21day/ch10/ch10.htm#UsingtheTTFONTSIZEwhileFONTTTFONTSIZEStatementFONT

Listing 10.12  An Example of the Use of the WHILE Statement

    1  report ztx1012.

    2  data: l,                         "leading  characters

    3        t,                         "trailing characters

    4        done.                      "done flag

    5  parameters p(25) default '    Vendor Number'.

    6  while done = ' '                 "the expression is evaluated first

    7      vary l from p+0  next p+1    "then vary assignments are performed

    8      vary t from p+24 next p+23.

    9      if l = ' ' and t = ' '.

    10         l = t = '-'.

    11     else.

    12         done = 'X'.

    13         endif.

    14     endwhile.

    15 write: / p.

It should produce the following output

The code in Listing 10.12 produces this output:

    ----Vendor Number    ----

Analysis     Lines 2 and 3 define two single character variables l and t. Line 3 defines a flag to indicate when processing is complete.     Line 5 defines p as character 25 with a default value.     On line 6, the expression on the while statement is first evaluated. It proves true the first time through the loop. The assignments on lines 7 and 8 are then performed. Line 7 assigns the first character from p to l and line 8 assigns the last character to t.     If l and t are both blank, line 10 assigns a dash to both. If they are not, line 12 assigns an 'X' to the done flag.     On line 14, endwhile copies the values from l and t back to p.     The while loop repeats again from line 6 as long as the done flag is blank.

[Former Member]

Hi Prince,

Try this code,

data:   l(1) type c,                         "leading  characters

        t(1) type c,                         "trailing characters

        done.                      "done flag

  parameters p(25) default '    Vendor Number'.

  while done = ' '                 "the expression is evaluated first

      vary l from p+0(1) next p+1(1) RANGE P  "then vary assignments are performed

      vary t from p+23(1) next p+22(1) range p.

      if l = ' ' and t = ' '.

         l = t = '-'.

     else.

         done = 'X'.

         endif.

     endwhile.

write: / p.

[Former Member]

This message was moderated.

[Former Member]

The type incompatible error is because you have specified the offset, but not the length.

Correct usage would be like this:

    VARY l FROM p+0(1)  NEXT p+1(1)  RANGE p
 
    VARY t FROM p+24(1) NEXT p+23(1) RANGE p.
 

Refrain from using VARY keyword if your keyword documentation considers this as obsolete.

[Former Member]

Dear Manish Kumar,

Thank you very much. Can you please help me to solve the following?

I have used 3 tables. The details are -

Table Type -> Check Table

Table Name -> YCT

Fields -> Country, Region

Values -> 1 entry -> INDIA, MUMBAI

Table Type -> Foreign Key table

Table Name -> YFKT

Fields -> Country

Table Type -> Another Table

Table Name -> YADFKT

Fields -> Region

Values -> 1 entry -> MUMBAI

Since this is an adapted Foreign Key, So the relationships are -:

YCT-Country = YFKT-Country

AND

YCT-REGION = YADFKT-Region

That means i want Valid "Country" should be present in check table (YCT) and for that a valid "Region" must be there in "YADFKT".

But when I am trying to enter data "INDIA" in YFKT then it is saying "Entry is not present in Check Table".

Why this error is coming ?

I have seen someone faced the same problem but havent solved yet

Please see the following links

http://scn.sap.com/message/13998633#13998633

http://scn.sap.com/message/13997823#13997823

Thanks again.