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.
For more information about conditional expressions, 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
- IF
- EVALUATE
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 linkage
- CALL ... ON OVERFLOW
- CALL ... ON EXCEPTION
- CALL ... NOT ON EXCEPTION
Table-handling
- SEARCH