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How do I use input function when trying to create this script?

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T.Y. Hilton
T.Y. Hilton 2018-2-28
评论： Stephen23 2018-2-28
Here is my assignment: Repeat the Fence problem from three assignments ago, this time saving it as a script and using the input() function rather than having constants for area, straight cost, and curved cost values. The upper limit for the radius independent variable should be computed (assume length of zero). Use disp() and [ ] to construct sentences to deliver the answers. The format string within num2str should be used to limit the numbers to two decimal places.
Here is my code from my last assignment:
>> Area = 1600;
>> StrCo = 30;
>> CurCo = 40;
>> R = [.01:.01:sqrt(2*Area/pi)];
>> L = (Area-.5*pi*R.^2)./(2*R);
>> Cost = (2*L+ 2*R)*StrCo +pi*R*CurCo;
>> [BestCost, Index] = min(Cost)
BestCost =
5.1575e+03
Index =
1861
>> BestR = R(Index)
BestR =
18.6100
>> BestL = L(Index)
BestL =
28.3714
I'm just having a lot of trouble saving this as a script and I have no clue how to use the input() function in this case! Just to clarify, R=Radius, StrCo = Straight Cost, CurCo = Curved Cost, and L=Length
  1 个评论
Stephen23
Stephen23 2018-2-28
duplicate:
https://www.mathworks.com/matlabcentral/answers/385357-i-need-help-with-using-the-input-function

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回答（1 个）

KSSV
KSSV 2018-2-28
prompt = 'Enter the value of Radius: ';
R = input(prompt,'s')
R = num2str(R) ;

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