How can I catch a specific ORACLE error in my PRO*C application

I would like to make something like
  EXEC SQL WHENEVER (SQLCODE = 6502) CONTINUE I know that I can't do that but I would like to have a possibility to continue the processing for a specific type of error and to exit for some other types of errors.

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|                       Abiy Alemu                                      |                       abiy_at_biotec.jouy.inra.fr  |


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