Why the third else if condition.. where i==1 && j==m went unexecuted

A=zeros(12,1);
n=3;
m=4;
for i=1:n
    for j=1:m
        if (i==1) && (j==1)
            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
    end
end
A

Answer 1

[Cris LaPierre]

You want the third condition to execute the i==1 and j==4. However, this also meets the conditions of the first elseif:

elseif (i==1) && (j>1 || j<m)

This is because you use "or" instead of "and". When j==4, it is >1. Because of the or, it doesn't matter that it is <m. Try this instead: elseif (i==1) && (j>1 && j<m)

[ravi shukla]

thanks Cris! it helped.