Article: Q65599
Product(s): See article
Version(s): 4.50
Operating System(s): MS-DOS
Keyword(s): ENDUSER | SR# S900828-7 docerr | mspl13_basic
Last Modified: 20-SEP-1990
In the book "Learn BASIC Now" (Microsoft Press, 1989), an incorrect
example of the SELECT CASE statement is shown on Pages 116 and 117.
Page 116 Example
----------------
The (incorrect) example at the bottom of Page 116 is as follows:
SELECT CASE userNum%
CASE IS 1 TO 5
PRINT "The number you entered was between 1 and 5."
CASE IS 6 TO 10
PRINT "The number you entered was between 6 and 10."
END SELECT
The SELECT CASE example on Page 116 should be corrected to read as
follows:
SELECT CASE userNum%
CASE 1 TO 5
PRINT "The number you entered was between 1 and 5."
CASE 6 TO 10
PRINT "The number you entered was between 6 and 10."
END SELECT
Page 117 Example
----------------
The (incorrect) code example on Page 117 is as follows:
SELECT CASE word$
CASE IS "a" TO "m"
PRINT "The word you entered was in the range a to m."
CASE IS "m" to "z"
PRINT "The word you entered was in the range m to z."
END SELECT
The code example on Page 117 should be corrected to read as follows:
SELECT CASE word$
CASE "a" TO "m"
PRINT "The word you entered was in the range a to m."
CASE "m" to "z"
PRINT "The word you entered was in the range m to z."
END SELECT
The examples on Pages 116 and 117 incorrectly use the IS keyword in
the CASE statement. The IS keyword should only be used when specifying
a relational operator, such as <=, >=, =, or <> in a conditional
expression. For example
CASE IS <= 5
correctly uses the IS keyword.
SELECT CASE is correctly described in the Online Help system of the
Microsoft QuickBASIC Interpreter (QBI.EXE version 1.00) on the disk
that comes with the "Learn BASIC Now" book.
QBI.EXE version 1.00 has the same language features as QuickBASIC
version 4.50, but note that QBI.EXE is just an interpreter and cannot
create .EXE programs.