How we can find the last character in a string(Urgent Plz!)

Gurus!
How we can find the last character in a string.
e.g i have a string say "Str" with value "10-01".
Now i want to find the last character in "Str" i.e "ONE=1".
i am using Oracle developer 6i with Oracle 8i(1.7).
Plz help!
Many thanks!

Use the substr() and length() functions -
x := '10-01';
y := substr(x, length(x));

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