Question about sprintf function.

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Portgas Ace 2012-9-29

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https://ww2.mathworks.cn/matlabcentral/answers/49419-question-about-sprintf-function

Here's my syntax:

bm= input ('value');  
val = 43 ;
A = sprintf('%d',val);  
%if i declare A(1), ans is 4, which is correct. 
c=0;  
A1 = A(1) .* (bm^(c))

Why is it that if my bm = 8, A1 = 52? its like 4 * 8 = 52. i think my error here is the sprintf function.

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Image Analyst 2012-9-29

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Why not just do

A1 = val;

???? bm^c is just 1, and I'm not sure if you really wanted to take the first digit of 43. If you did, you could just do

A1 = floor(A/10); % As long as A is less than 100.

instead of using sprintf. Is A really some sort of ASCII or hexadecimal number?

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Portgas Ace 2012-9-29

why is there 17 18 19 10? it should be up to 16 only right? since up to F only?

Image Analyst 2012-9-29

Yes, you're right. It does really only go to 16. I didn't have a "clearvars" or "clear all" in there so there was left over stuff in theNumbers from prior test runs. This shows one good reason to use clear (though I know Jan doesn't like it) is to avoid goofs like this. Sorry about that.

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