Fibonacci sequence function problem

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Mohammad Abir Hassan Sarker
评论： Mohammad Abir Hassan Sarker 2018-4-9
I used this code to find the number of even elements in the Fibonacci Sequence up to a given number 'd'.
function y = evenFibo(d)
k = 0;
for i = 1:1:d
a = fibonacci(i);
if rem(a,2)==0
k = k+1;
else
k = k+0;
end
end
y = k;
end
But , it's repeatedly showing that "Undefined function 'fibonacci' for input arguments of type 'double'". How can I solve this problem?

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回答（1 个）

James Tursa
James Tursa 2018-4-9
编辑：James Tursa 2018-4-9
The fibonacci( ) function was introduced in R2017a. What version of MATLAB are you running?
If you are running an earlier version, try this FEX submission from John D'Errico:
https://www.mathworks.com/matlabcentral/fileexchange/34766-the-fibonacci-sequence
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Mohammad Abir Hassan Sarker
Mohammad Abir Hassan Sarker 2018-4-9
I'm using R2018a, it's working fine in my PC, but whenever I try to submit for Cody problems, the problem I mentioned earlier occurs

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