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如何迅速利用现有变量推动投入
原标题:How to prompt for input using an existing variable in the prompt
  • 时间:2010-05-08 12:54:37
  •  标签:
  • matlab

我试图向用户索取一些变数的价值,但与此同时,他显示了所使用的最后价值(在方案终止时,这些数值被保存到档案中,并在方案开始时装上)。

与此类似:

Enter new radius value (R=12.6) :
... user enters 12.7 ...
Enter new pi value (pi=3.14) :
Enter new height value (h=30.0) :

通常,我将用write声明,然后在read上写新声明(例如,为之)。 然而,在MATLAB中,我不知道如何用input的发言来写一些东西。 是否有其他发言供大家参考?

最佳回答

您可为此使用<条码>输入<>代码>,加上<条码>。

%# set defaults
radius = 12.6;

%# ask for inputs
tmp = input(sprintf( Enter new radius value (R=%4.2f)
 ,radius));
%# if the user hits  return  without writing anything, tmp is empty and the default is used
if ~isempty(tmp)
    radius = tmp;
end

作为一种替代办法,您不妨查看INPUTD

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