Fwd: NULL in variable defined AS STRING

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it works with length..

MAIN
    DEFINE  s1 STRING, s2 CHAR(100)

    LET s1 =3D NULL
    IF length(s1) =3D 0 THEN
        DISPLAY "s1 IS NULL!"
    ELSE
        DISPLAY "s1 IS NOT NULL!"
    END IF

    LET s2 =3D NULL
    IF s2 IS NULL THEN
        DISPLAY "s2 IS NULL!"
    ELSE
        DISPLAY "s2 IS NOT NULL!"
    END IF

END MAIN





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Fernando Morales
Programador Analista
Hospital para el ni=C3=B1o Poblano

"Leadership: The art of getting someone else to do something you want done
because he wants to do it."

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<div dir=3D"ltr"><div><br></div><div>
<div>it works with length..</div><div><br></div><div><span class=3D"gmail-i=
m">MAIN<br>=C2=A0 =C2=A0 DEFINE =C2=A0s1 STRING, s2 CHAR(100)<br><br>=C2=A0=
 =C2=A0 LET s1 =3D NULL<br></span>=C2=A0 =C2=A0 IF length(s1) =3D 0 THEN<sp=
an class=3D"gmail-im"><br>=C2=A0 =C2=A0 =C2=A0 =C2=A0 DISPLAY &quot;s1 IS N=
ULL!&quot;<br>=C2=A0 =C2=A0 ELSE<br>=C2=A0 =C2=A0 =C2=A0 =C2=A0 DISPLAY &qu=
ot;s1 IS NOT NULL!&quot;<br>=C2=A0 =C2=A0 END IF<br><br>=C2=A0 =C2=A0 LET s=
2 =3D NULL<br>=C2=A0 =C2=A0 IF s2 IS NULL THEN<br>=C2=A0 =C2=A0 =C2=A0 =C2=
=A0 DISPLAY &quot;s2 IS NULL!&quot;<br>=C2=A0 =C2=A0 ELSE<br>=C2=A0 =C2=A0 =
=C2=A0 =C2=A0 DISPLAY &quot;s2 IS NOT NULL!&quot;<br>=C2=A0 =C2=A0 END IF<b=
r><br>END MAIN</span></div>

<br></div><br><div class=3D"gmail_quote gmail_quote_container"><div dir=3D"=
ltr" class=3D"gmail_attr"><br></div><br><div class=3D"gmail_quote"><blockqu=
ote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px=
 solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr"><br></div>
_______________________________________________<br>
Aubit4gl-discuss mailing list<br>
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el=3D"noreferrer" target=3D"_blank">https://lists.sourceforge.net/lists/lis=
tinfo/aubit4gl-discuss</a><br>
</blockquote></div>
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el=3D"noreferrer" target=3D"_blank">https://lists.sourceforge.net/lists/lis=
tinfo/aubit4gl-discuss</a><br>
</div><div><br clear=3D"all"></div><br><span class=3D"gmail_signature_prefi=
x">-- </span><br><div dir=3D"ltr" class=3D"gmail_signature" data-smartmail=
=3D"gmail_signature"><div dir=3D"ltr"><div>Fernando Morales<br>Programador =
Analista<br>Hospital para el ni=C3=B1o Poblano<br><br>&quot;Leadership: The=
 art of getting someone else to do something you want done because he wants=
 to do it.&quot;<br><br></div></div></div></div>

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