DECLARE N : INTEGER
DECLARE Ch : CHAR
DECLARE Text : STRING
OUTPUT STR_TO_NUM("23.45")
OUTPUT STR_TO_NUM('7')
N <- STR_TO_NUM("23.45")
OUTPUT N
N <- STR_TO_NUM("-23.45")
OUTPUT N
N <- STR_TO_NUM('7')
OUTPUT N
OUTPUT NUM_TO_STR(7), ":", NUM_TO_STR(7.0)
Ch <- NUM_TO_STR(7)
OUTPUT Ch
Text <- NUM_TO_STR(12)
OUTPUT Text
TRY
    Ch <- NUM_TO_STR(12)
CATCH
    OUTPUT "length caught"
ENDTRY
TRY
    Ch <- NUM_TO_STR(7.0)
CATCH
    OUTPUT "real length caught"
ENDTRY
TRY
    N <- STR_TO_NUM("bad")
CATCH
    OUTPUT "invalid caught"
ENDTRY
TRY
    N <- STR_TO_NUM("1e30")
CATCH
    OUTPUT "range caught"
ENDTRY