How to use a display a string in fprintf

Question

t sizzle 2021-3-19

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/778002-how-to-use-a-display-a-string-in-fprintf

评论： Gregg Cole 2022-1-14

I am trying to write a section that will display two numerical values, with their units followed after each. The units will change depending upon what the user enters as their units. So far what I have tried are these two things. I can get it to display the numerical value but if I try to include the units it adds "random" numbers.

fprintf('\n The numerical value is %g %g, and the second value is %g %g.\n', numerical_value_1,num2str(units), numerical_value_two,num2str(units))
fprintf('\n The numerical value is %g %g, and the second value is %g %g.\n', numerical_value_1, units, numerical_value_two, units)

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Answer 1

Image Analyst 2021-3-19

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https://ww2.mathworks.cn/matlabcentral/answers/778002-how-to-use-a-display-a-string-in-fprintf#answer_652972

在 MATLAB Online 中打开

Try

units = 'mm'; % Whatever it is, assuming it's a string.
fprintf('\n The numerical value is %g %s, and the second value is %g %s.\n', numerical_value_1, units, numerical_value_two, units)
fprintf('\n The numerical value is %g %s, and the second value is %g %s.\n', numerical_value_1, units, numerical_value_two, units)

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t sizzle 2021-3-19

This works perfectly thank you

Gregg Cole 2022-1-14

Worked well as well, thank you

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Answer 2

Isabelle Foster 2021-3-19

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/778002-how-to-use-a-display-a-string-in-fprintf#answer_652917

在 MATLAB Online 中打开

If I understand you correctly, it will help you.

Example:

a = {'cats', 'dogs', 'birds'};
as = sort(a);
fprintf('%s, ', as{1:end-1});
fprintf('and %s are animals.\n', as{end});

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t sizzle 2021-3-19

To be honest I don't really understand your answer. I probably did a terrible job explaining so I will try to do a better job. For example, I am trying to display the maximum value of an array as well as the minimum value. Following each of these values will be a unit as chosen by the user.

So far, I have a variable which is equal to an array of numbers calculated based on what values a user inputs. Here is a basic example of how I have set up my code so far.

x = an array of values obtained after running user inputs through a formula

a = x (the size and values of x change based on what a user inputs)

units = a string input of what a user wants

maximum_value = max(x)

minimum_value = min(x)

fprintf(here is where i need help)

using the methods I have tried I can make it say

"the max is 45 and min is 20"

but when I try to include units I get something like

the max is 110

the max is 123 45

the min is 110

the min is 123 20

I would like to display a message using fprintf that basically says

The maximum value is 45 "units" and the minimum is 20 "units".

The 45, 20, and "units" will change based on what numbers and units a user inputs.

Oliveira Pereira 2021-9-10

thx

Gregg Cole 2022-1-14

Great, thanks!

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How to use a display a string in fprintf

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