what str2num will perform?

1 次查看（过去 30 天）
Shan Sha
Shan Sha 2018-11-13
评论： Rik 2018-11-13
fid = fopen(txtfile,'r');
tline = fgetl(fid);
index = findstr(tline,'.');
i = i+1;
filenames(i) = str2num(tline(1:index-1))+1;
what is the function of str2num here? I am not getting clear with the mathwork help. Can anyone explain in brief?
  2 个评论
Adam
Adam 2018-11-13
编辑：Adam 2018-11-13
It converts a string to a number, if such a conversion makes sense.
You can just try it on your command line, e.g.
str2num( '17' )
Surely
doc str2num
is fairly clear though?! It gives clear examples.
Rik
Rik 2018-11-13
As the documentation mentions, str2num uses eval and might thus have unintended side effects, which you can avoid by using str2double. In most cases these two functions should be equivalent.

请先登录，再进行评论。

请先登录，再回答此问题。

回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Data Type Conversion 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by