使用 input() 函数在 Octave 中获取键盘输入
我目前通过 Xoctave 在 Windows 中使用 Octave，但遇到以下问题。
我尝试运行一个以
activity = input("What would you like to do? ");
When I call this script in the console, it prints out
What would you like to do?
When I call this script in the console, it prints out When I key in a number and press Enter, it returns:
What would you like to do? 1
error: `What' undefined near line 4 column 1
>>
When I key in a number and press Enter, it returns:开头的脚本 （即尝试解析整行，包括提示文本）。
为了更清楚地了解我想说的内容，只需保存一个仅包含以下行的脚本：
m = input('Enter m: ');
然后尝试在 Xoctave 中运行该脚本。我相信你也会遇到同样的错误。
我相信这与更改默认解析行为有关，但我不确定如何更改。
@Bart_Kiers
我认为你误解了=\ 当我按照您刚刚规定的操作时，它会存储： 活动=你想做什么？ 1 我希望它只存储 Activity=1 我发现做到这一点的唯一方法是： Activity1=input("选择 1 或 0"); Activity2=strrep(activity,"选择 1 或 0",""); Activity=str2num(activity2)
它将输出到： Activity=1
为了澄清这个问题，它使用菜单功能创建了一个类似但更令人沮丧的问题。 如果我这样做：
number=menu("What's your favorite number?",1,2,3,4,5);
它会提示：
[ 1] 1
[ 2] 2
[ 3] 3
[ 4] 4
[ 5] 5
pick a number, any number:
我键入 3 并按 Enter 键，它会返回：“错误：输入无效或超出范围”，因为它正在尝试解析整行，包括提示！ =[救命！
另外，我使用 Xoctave 与 Windows 中的 Octave 命令行进行交互。 不确定这是否有帮助。
谢谢！
I'm currently using Octave in Windows through Xoctave and I'm having the following problem.
I attempted to run a script that starts with
activity = input("What would you like to do? ");
When I called this script in the console, it prints out
What would you like to do?
When I key in a number and press enter, it returns:
What would you like to do? 1
error: `What' undefined near line 4 column 1
>>
It seems as if the console is trying to parse the output of the previous command (i.e., trying to parse the whole line, including the prompt text).
To get a clearer picture of what I'm trying to say, just save a script with only the line:
m = input('Enter m: ');
then try to run that script in Xoctave. I believe you'll get the same error too.
I believe this has to do with changing the default parsing behavior, but I'm not sure how.
@Bart_Kiers
I think you misunderstand =\
When I do what you just prescribed, it stores:
activity = What would you like to do? 1
I want it to just store activity=1
the only way I've found to do this is to do:
activity1=input("Pick 1 or 0");
activity2=strrep(activity,"Pick 1 or 0 ","");
activity=str2num(activity2)
To which it will output:
activity=1
To clarify the issue, it creates a similar, yet significantly more frustrating problem using the menu function.
if i do this:
number=menu("What's your favorite number?",1,2,3,4,5);
it prompts:
[ 1] 1
[ 2] 2
[ 3] 3
[ 4] 4
[ 5] 5
pick a number, any number:
I key in 3 and press enter and it returns: "error: input invalid or out of range" because it is trying to parse the entire line, including the prompt! =[ help!
Also, I'm using Xoctave to interface with the Octave command line in Windows.
Not sure if this helps.
Thanks!
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我无法复制您的错误，但您可以尝试：
新行不适用于菜单。
I can't replicate your error, but you might try:
New line won't work with menu though.