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# why elseif (i==1) && j==m condition went unexecuted?

5 views (last 30 days)
ravi shukla on 17 Aug 2020
Edited: Jan on 18 Aug 2020
A=zeros(12,1);
n=3;
m=4;
for i=1:n
for j=1:m
if i==1 && j==m
A(1,1)=1;
elseif (i==1) && (j>1 || j<m)
A(2,1)=2;
elseif (i==1) && (j==m)
A(3,1)=3;
end
A

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### Accepted Answer

Jan on 17 Aug 2020
Edited: Jan on 18 Aug 2020
The condition "i==1 && j==m" appears twice:
if i==1 && j==m % First time
A(1,1)=1;
elseif (i==1) && (j>1 || j<m)
A(2,1)=2;
elseif (i==1) && (j==m) % Second time
A(3,1)=3;
end
If the first condition is met already, further elseif branches are not called anymore. The if block is left directly after the first condition is matching and the corresponding block was executed.

#### 2 Comments

Stephen Cobeldick on 17 Aug 2020
Welcome back!
Jan on 18 Aug 2020
Hi Stephen, I thought I give it a try. I still cannot unaccept an answer in Firefox, post an image or remove a flag. The auto-editing inserts an "end" if I type an "if". Most likely I have to accept to be tracked by 13 services including facebook, bing, s3.amazonaws and ads-twitter to use Matlab Answers with its full functionality.

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