A problem about using %f

hİ, i am beginner with matlab

i'm trying to show just first 3 digits of these numbers.

For example 150 for first one and 122 for second one. How can i do this?

Here is my code of that part

 handles.popupmenu3.String{end+1} =  sprintf('l(%d)= %.1f',i,l(i));

Answer 1

[per isakson]

Try this

%%
K = randi( [1e9,9e9], 1,9 ); % sample data
%%
cac = arrayfun( @(x) num2str(x), K, 'uni',false );
%%
str = string.empty;      % or str = cell(1,0);
for ii = 1 : 9
    str{end+1} = sprintf( 'l(%d)= %s', ii, cac{ii}(1:3) );
end
str([1,7])

outputs

ans = 
  1×2 string array
    "l(1)= 655"    "l(7)= 712"
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