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Test
Your EQ #146— Answer
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Answer
8
In this case, the if-then
becomes a series of instructions ending in a conditional
skip, followed immediately by a jump. Note that the condition
of the skip is such that the skip is taken (jumping to
the "then" clause) if the expression is true.
The
"else" keyword marks the end of the "then" clause, and
as before, it becomes an unconditional jump to the "endif",
followed by the target label for the conditional jump
instruction above.
Finally,
the "endif" keyword becomes the target label for the unconditional
jump. These relationships are shown below.
if (expression) then
.
. statements executed
. if (expression) true
.
else
.
. statements executed
. if (expression) false
.
endif
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; code to evaluate
; (expression)
skip next instruction if true
jump to labelA
;
; code executed if
; (expression) true
;
jump to labelB
labelA:
;
; code executed if
; (expression) false
;
labelB:
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Contributor:
Dave Tweed
Published: September-2002
