
\Su3b2\S:  Examples

        if u3b15
    then cc -Du3b15 format.c -o format.o
        elif u3b2
    then cc -Du3b2 format.c -o format.o
        fi

    This shell program compiles the program in the file "format.c".  It puts
    the compiled version in "format.o".  The program checks if the computer is
    an AT&T 3B15 or 3B2 computer.  If the machine is 3B2 the second compile
    command compiles "format.c".  The "Du3b2" option to cc(1) causes only the
    machine-dependent lines that pertain to the 3B2 to be executed so that
    "format.o" is correct for the machine it is on.  See the manual page
    fpr cpp(1) for an explanation of the "D" option.
