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Systems Programming with the SAS/C Compiler

Writing CICS User Exits

The sample source code issues several EXEC CICS commands:

If you want to write CICS exit programs in C, you must modify these commands. For example, in CICS/ESA, code the corresponding user exit programming interface (XPI) calls rather than issue EXEC CICS commands. You can modify L$UCENV to save the CRAB address in a global work area so that the C framework is only created when the program is first invoked; subsequent invocations restore the C framework.


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