Conditional statements
A
conditional statement specifies that the truth value of a condition is
to be determined and that the subsequent action of the object program is
dependent on this truth value. (See Conditional expressions.) The following lists contain COBOL statements that become
conditional when a condition (for example, ON SIZE ERROR or ON
OVERFLOW) is included and when the statement is not terminated by its explicit
scope terminator.
Arithmetic
- ADD ... ON SIZE ERROR
- ADD ... NOT ON SIZE ERROR
- COMPUTE ... ON SIZE ERROR
- COMPUTE ... NOT ON SIZE ERROR
- DIVIDE ... ON SIZE ERROR
- DIVIDE ... NOT ON SIZE ERROR
- MULTIPLY ... ON SIZE ERROR
- MULTIPLY ... NOT ON SIZE ERROR
- SUBTRACT ... ON SIZE ERROR
- SUBTRACT ... NOT ON SIZE ERROR
Data movement
- STRING ... ON OVERFLOW
- STRING ... NOT ON OVERFLOW
- UNSTRING ... ON OVERFLOW
- UNSTRING ... NOT ON OVERFLOW
- XML GENERATE ... ON EXCEPTION
- XML GENERATE ... NOT ON EXCEPTION
- XML PARSE ... ON EXCEPTION
- XML PARSE ... NOT ON EXCEPTION
Decision
Input-output
- DELETE ... INVALID KEY
- DELETE ... NOT INVALID KEY
- READ ... AT END
- READ ... NOT AT END
- READ ... INVALID KEY
- READ ... NOT INVALID KEY
- REWRITE ... INVALID KEY
- REWRITE ... NOT INVALID KEY
- START ... INVALID KEY
- START ... NOT INVALID KEY
- WRITE ... AT END-OF-PAGE
- WRITE ... NOT AT END-OF-PAGE
- WRITE ... INVALID KEY
- WRITE ... NOT INVALID KEY
Ordering
- RETURN ... AT END
- RETURN ... NOT AT END
Program or method linkage
- CALL ... ON OVERFLOW
- CALL ... ON EXCEPTION
- CALL ... NOT ON EXCEPTION
- INVOKE ... ON EXCEPTION
- INVOKE ... NOT ON EXCEPTION
Table-handling
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