how do i prompt a prompt

Question

stephen aboasu 2015-9-9

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/241776-how-do-i-prompt-a-prompt

回答： Image Analyst 2015-9-10

I'm writing a code to do a calculation. after the user puts in the number I want the next line of code to ask the user is it in inches or centimeters.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Walter Roberson 2015-9-9

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/241776-how-do-i-prompt-a-prompt#answer_191830

在 MATLAB Online 中打开

consider using menu()

But if not then

whichunits = input('Inches (i) or centimeters (c)? ', 's');
if strncmpi(whichunits, 'i', 1)
  whichunits = 'i';
elseif strncmpi(whichunits, 'c', 1)
  whichunits = 'c';
else
  warning('I did not understand that answer. Assuming inches');
  whichunits = 'i';
end

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

Answer 2

Image Analyst 2015-9-10

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/241776-how-do-i-prompt-a-prompt#answer_191841

在 MATLAB Online 中打开

Try this:

promptMessage = sprintf('Are the units inches or centimeters?');
titleBarCaption = 'Define Units';
buttonText = questdlg(promptMessage, titleBarCaption, 'in', 'cm', 'Cancel', 'in');
if strcmpi(buttonText, 'Cancel')
  % User clicked cancel - they want to bail out
  units = ''
  return;
elseif strcmpi(buttonText, 'cm')
  % User clicked cm.  Assign a variable called "units".
  units = 'cm'
else
  % User clicked in.  Assign a variable called "units".
  units = 'in'
end