NOCMPR2

Under NOCMPR2, all programs are assumed to end with an EXIT PROGRAM statement. For a called subprogram, then, control can no longer flow beyond the last line of the program, but instead, the program will return to the calling program. In the preceding example, where the program ended with the statement:

IF TALLY = 0 THEN STOP RUN.

a false test will cause control to be returned to the caller. With CMPR2 behavior, the result is an abend.

For a main program, the EXIT PROGRAM statement has no effect. Therefore, the implicit EXIT PROGRAM that is generated by the compiler will have no effect on the execution of the program; a main program that executes beyond the last line of the program will still abend.