Easy question comparing strings

JP
2013 6 26
1 个回答
回答已采纳
8 次查看（30 天）

0 个投票

Hello I have the following code which doesn't work. The problem is Im trying to compare the value "NaN" which I guess isnt a string?...to the value of X. Let me know how to fix it thanks!
str = input('Please enter a number \n\n','s');
X = str2double(str);
test=strcmp(X,'NaN');
if test == 1
disp('That was not a valid number');
else
disp('Here is your number')
disp(X)
end

请先登录，再回答此问题。

 采纳的回答

Tom
Tom 2013-6-26

0 个投票

You can just ISNAN instead:
str = input('Please enter a number \n\n','s');
X = str2double(str);
if isnan(X)
disp('That was not a valid number');
else
disp('Here is your number')
disp(X)
end

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Numeric Types 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