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A variable in LABVIEW MATHSCRIPT is a named value. Using variables allows us to manipulate values symbolically, which is particularly useful when programming.
Suppose we wish to compute the circumference of a circle of diameter 5 units using the formula
$c=\pi d$ . We could first set the variable
d
to a value of 5:
>>d = 5
d =5.000
Then we could compute the circumference and assign its value to the variable
c
:
>>c = pi*d
c =15.708
To execute this command, LABVIEW MATHSCRIPT computes the product of the value of
d
(which LABVIEW MATHSCRIPT knows because we earlier set it to 5) and the value of
pi
(which is a pre defined variable in LABVIEW MATHSCRIPT) and stores the value of the product in the variable
c
.
Variable names must begin with an upper or lowercase letter. They may contain letters, digits, and underscores; they may not contain spaces or punctuation characters. LABVIEW MATHSCRIPT is case sensitive, so
A
and
a
are different variables.
Which of the following are valid variable names?
a
B
ecky_ecky_ecky_ecky_ptang_zoo_boing
ecky ecky ecky ecky ptang zoo boing
2nd
JohnBigboote
LABVIEW MATHSCRIPT has several predefined variables. The most commonly used include
ans
 the default variable in which computation results are stored.pi
 π.i
or
j

$\sqrt{1}$ .clear
command.
LABVIEW MATHSCRIPT variables can contain several types of numerical values. These types include the following:
c
and
d
in
are scalar variables.Notification Switch
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