Loops/While: Difference between revisions
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=={{header|Haskell}}== |
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Introducing and especially updating a loop variable requires side effects. So it's simpler to just create a list of the required values, and then loop over it to print them. However, that doesn't really reflect the structure of the imperative solutions. |
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<pre> |
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mapM print $ takeWhile (>0) $ iterate (`div` 2) 1024 |
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</pre> |
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=={{header|Java}}== |
=={{header|Java}}== |
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Revision as of 01:52, 13 April 2008
You are encouraged to solve this task according to the task description, using any language you may know.
Start a value at 1024. Loop while it is greater than 0. Print the value (with a newline) and divide it by two each time through the loop.
Ada
<ada> declare
I : Integer := 1024;
begin
while I > 0 loop
Put_Line(Integer'Image(I));
I := I / 2;
end loop;
end; </ada>
BASIC
<qbasic>i = 1024 while i > 0
print i i = i / 2
wend</qbasic>
C
int i = 1024;
while(i > 0) {
printf("%d\n", i);
i /= 2;
}
Java
<java>int i = 1024; while(i > 0){
System.out.println(i); i >>= 1; //also acceptable: i /= 2;
}</java>