IIF function
Purpose: IIF returns the TRUECase or FALSECase value based on the state of the Boolean expression
Syntax 1: RetVal# = IIF(Expression, TRUECase, FALSECase) Parameters:
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Example:
DIM A, B, C A = 5 B = 6 C = IIF(A > B, 100, 200) PRINT C ' The condition A > B is FALSE, ' therefore the FALSECase, 200, is displayed.
IIF$ function
Purpose: IIF$ returns the TRUECase or FALSECase string based on the state of the Boolean expression.
Syntax 1: RetStr$ = IIF$(Expression, TRUECase, FALSECase) Parameters:
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Example:
DIM
a, b, c$ a=
1
b=
2
"a = 1 b = 2"
c$=
IIF$
(
a=
b,"TRUE"
,"FALSE"
)
"IIF$(a = b, TRUE, FALSE) returned "
, c$ c$=
IIF$
(
a <> b,"TRUE"
,"FALSE"
)
"IIF$(a <> b, TRUE, FALSE) returned "
, c$ c$=
IIF$
(
a < b,"TRUE"
,"FALSE"
)
"IIF$(a < b, TRUE, FALSE) returned "
, c$ c$=
IIF$
(
a > b,"TRUE"
,"FALSE"
)
"IIF$(a > b, TRUE, FALSE) returned "
, c$
Produces this output:
a = 1 b = 2 IIF$(a = b, TRUE, FALSE) returned FALSE IIF$(a <> b, TRUE, FALSE) returned TRUE IIF$(a < b, TRUE, FALSE) returned TRUE IIF$(a > b, TRUE, FALSE) returned FALSE
The following example shows how IIF$
can be used to compare strings.
Example:
DIM
buf1$, buf2$, str1$ buf1$=
"1898-10-1"
buf2$=
"1898-8-10"
"buf1 = 1898-10-1 b = 1898-8-10"
str1$=
IIF$
(
strcmp(
buf1$, buf2$)
=
-
1
,"TRUE"
,"FALSE"
)
IF
str1$=
"TRUE"
THEN
"buf1 less than buf2"
END
IF
IF
str1$=
"FALSE"
THEN
"buf1 not less than buf2"
END
IF