Huhu,
Thank you for all you guys. readline works.
I hope R can be more and more powerful to deal with strings.
Thank you so much;
Zhou
2010/4/14 Erik Iverson <er...@ccbr.umn.edu>
> David Scott wrote:
>
>> Erik Iverson wrote:
>>
>>> ?? wrote:
>>>
>>>> Thank you for your reply.
>>>>
>>>> My objective is simple. Assume I have a constant vector, say Vector. in
>>>> C++ code, I want to do:
>>>>
>>>>
>>>> int index;
>>>> cout<<"Please enter the index of the element you want to look at Vector
>>>> :";
>>>> cin>>index
>>>> cout<<Vector[index]
>>>>
>>>>
>>>> I want every user to be able to do this.
>>>>
>>>> As I understand, scan can only read data from a fixed file. Can I just
>>>> get the input from the shell directly?
>>>>
>>>>
>>> Isn't that what the file argument of ?scan says? I think?
>>>
>>> file: the name of a file to read data values from. If the
>>> specified file is "", then input is taken from the keyboard
>>> (or whatever stdin() reads if input is redirected or R is
>>> embedded).
>>>
>>>
>> I think the required function is readline which prompts for user input.
>>
>> ?readline
>>
>>
> Great, didn't know that one. The example in ?readline is hilarious.
>
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