072: BEGIN CASE
073: CASE ANS MATCHES '0N' ANS0
074: IF MITM5,ANS# THEN
075: IF MITM7,ANS# THEN GOSUB 200 ; IF
I saw a case similar to this. There was this program
code which was looking for an address. There was an
index per building where the city code, civic number
and street name was the key. The appartments were
seperated by value marks on field 1.
Anyhow, the LOCATE command on the appartments, made a
match for appartment 1 when appartment 1E0 was what
was being looked for. 1E0 was interpreted as: 1 x
10^0 which meant the same as 1.
Years ago: num( :1 ) would give 1, now it is true
on 10.something.
In the above example I believe that if ANS is a
string, the 0 will be treated as: 0 (the string
zero). In which case it can be compared.
Perhaps you should change the code to:
ANS += 0 ;* Force it to become a number
BEGIN CASE
CASE ANS MATCHES '1N0N' AND ANS 0
'1N0N' will force at least one numerical digit to pass
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