While
While[
test
,
body
]
evaluates
test
then
body
repetitively until
test
fails to give
True
.
Example:
i
=
0;
While[i
<
0,
tot
+=
f[i];
i++]
. Note that the roles of
;
and
,
are
reversed
relative to the C programming language.
See also:
Do
,
For
,
Table
.
Examples
Using InstantCalculators
Here are the InstantCalculators for the
While
function. Enter the parameters for your calculation and click
Calculate
to see the result.
In[1]:=
Initialize the variable
i
before evaluating the
While
False
Text Input.
In[2]:=
In[3]:=
Entering Commands Directly
You can paste a template for this command via the Text Input button on the
While
Function Controller.
The iteration variable,
i
, must first be initialized.
In[4]:=
The body of
While
must have an iteration command. The iteration in this example adds
2
.
In[5]:=
Clear the variable definition.
In[6]:=
The body of
While
can take more that just
Print
commands. Evaluate the cell to see the output.
In[7]:=
Clear the variable definition.
In[8]:=
