For loop with variable
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Hi I'm trying to build a for loop with variables only however it is not working it only gives me one correct value and then the other two are incorrect. The only one correct is the one where it says answer Idk what to do to make the other two work. 
1 个评论
Scott MacKenzie
2021-4-22
Why are you trying to use a for-loop? What you are trying to do?
回答（2 个）
Cris LaPierre
2021-4-22
1 个投票
2 个评论
andrea vivas
2021-4-22
Cris LaPierre
2021-4-22
You might have to do a little application of what you learn.
DGM
2021-4-22
If you do this:
for n=1,2,3
% do thing
end
It's the same as doing
for n=1
2 % these do nothing but print to console
3
% do thing
end
Your loop will cycle only once. Instead, use
for n=[1 2 3]
because that actually specifies a vector.
Lastly, your loop doesn't actually store any values. It just dumps the result to console. If you intend to use it for something, you'll have to assign the output to a variable.
2 个评论
andrea vivas
2021-4-22
DGM
2021-4-22
Consider the slightly more elaborate example:
inputvector=[12 564 32 9 6.2]; % specify inputs
outputvector=zeros(size(inputvector)); % preallocate outputs
for n=1:numel(inputvector) % define iterator based on input length
outputvector(n)=inputvector(n)/4; % store the output
end
Of course, if all you're doing is dividing by four and nothing else, this entire example can be simplified to:
inputvector=[12 564 32 9 6.2];
outputvector=inputvector/4;
Nothing in the loop is dependent on prior results, so you don't need it.
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2021-4-22
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