calculate working days between two dates with abap

http://developerpages.gr/index.php/desktop-development-2/abap/75-calculate-working-days-between-two-dates-with-abap

Submit abap program and gets output from memory

The following program runs an abap program and gets the output list from memory into internal table :

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program EXEC_CMD
report ztest_submit.
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SUBMIT ZEXEC_CMD
*          with par1 = ''           " Parameters