I wanna create vector of structures

Why

"for i=1:10 vec(i)=struct('a',i, 'b',20-i, 'c',i+3); end"

does not work?

How can I correct it to create vectors of structures?

[Stephen23]

for k = k:-1:1
  X(k).a = k;
  X(k).b = 20-k;
  X(k).c = k+3;
end

Answer 1

[Azzi Abdelmalek]

ii=1:10
vec=struct('a',num2cell(ii),'b',num2cell(20-ii),'c',num2cell(ii+3))

Answer 2

[Muthu Annamalai]

You may also try, in addition to Azzi's code,

   ii=1:10;
   vec  = arrayfun ( @(i) struct('a',i, 'b',20-i, 'c',i+3), ii );

depending on your stylistic preference.