"randi(100)" Outputting Characters Instead of Integers

In line 2 below, "randi(100)" is returning characters, including black spaces, instead of integers. What code is converting "randi(100)" to return characters above line XXX, and how can I change this code to return integers?

        dstr=num2str(d);
        name=strcat('d',dstr,'_',randi(100));

[per isakson]

That's the way strcat works ( str as in string)

>> strcat( 97:107 )
ans =
abcdefghijk

Is this what you want?

>> dstr = 'hello';
>> name=strcat('d',dstr,'_',num2str( randi(100) ));
>> name
name =
dhello_82

[balsip]

Thanks to you as well, Per Isakson. Didn't realize that tacking on another "num2str" would work.

[per isakson]

IMO: it's better to use sprintf

>> name = sprintf( 'd%s_%d', dstr, randi(100) )
name =
dhello_91

[balsip]

That would work, too! Thanks again.

Answer 1

[the cyclist]

I think you might want

name=strcat('d',dstr,'_',num2str(randi(100)));

This will convert the number to its string equivalent, rather than the ASCII value corresponding to that value (which is what I assume is happening now).

[balsip]

Thanks for the quick reply, Cyclist. That did the trick. Very green here, so it's much appreciated.