Convert Fahrenheit to Celcius while the inpu Fahrenheit is an array

Question

Muhammad Aiman Al-Amin 2023-4-9

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1944094-convert-fahrenheit-to-celcius-while-the-inpu-fahrenheit-is-an-array

编辑： Image Analyst 2023-4-9

"Write a script file to compute and display a table to convert from degrees Fahrenheit to degrees Celcius over the temperature (T) range 0 to 100 F in increments of 10 degrees. The conversion relation is T C = 5(T F – 32)/9"

Basically, that the question. However, my main problem is on the fprintf part

As you guys can see, instead of

Fahrenheit1 F = Celcius1 C

Fahrenheit2 F = Celcius2 C

,

it give that output which is

Fahreheit1 F = Fahrenheit2 C

Celcius1 F = Celcius2 C

Anyone know what I should modified my code to make sure the program display the fahrenheit and celcius alternately instead of filling in all the fahrenheit values first in the %format?

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Answer 1

VBBV 2023-4-9

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1944094-convert-fahrenheit-to-celcius-while-the-inpu-fahrenheit-is-an-array#answer_1212234

在 MATLAB Online 中打开

clear
T = 0:10:100;
C = (5*(T-32)/9)
C = 1×11
  -17.7778  -12.2222   -6.6667   -1.1111    4.4444   10.0000   15.5556   21.1111   26.6667   32.2222   37.7778
fprintf('%4.2f F = %4.2f C\n',[T;C])
0.00 F = -17.78 C
10.00 F = -12.22 C
20.00 F = -6.67 C
30.00 F = -1.11 C
40.00 F = 4.44 C
50.00 F = 10.00 C
60.00 F = 15.56 C
70.00 F = 21.11 C
80.00 F = 26.67 C
90.00 F = 32.22 C
100.00 F = 37.78 C

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Muhammad Aiman Al-Amin 2023-4-9

Oh I see, so whenever we want to have multiple set of arrays as a set of inputs, I need to put the matrice square bracket,

Thank you!

Image Analyst 2023-4-9

编辑：Image Analyst 2023-4-9

在 MATLAB Online 中打开

When you have more items in the variable list than % format specifiers in the format specifier string, like 11 instead of 2 in this case, it basically "reuses" the format specifier string for the remaining variable values. It evidently does this row-by-row for the [T, C] 2-D matrix.

Or you could put it into a for loop if you prefer, or think it's simpler.

clear
T = 0:10:100;
C = (5*(T-32)/9)
C = 1×11
  -17.7778  -12.2222   -6.6667   -1.1111    4.4444   10.0000   15.5556   21.1111   26.6667   32.2222   37.7778
for k = 1 : numel(C)
    fprintf('%4.2f F = %4.2f C\n', T(k), C(k))
end
0.00 F = -17.78 C
10.00 F = -12.22 C
20.00 F = -6.67 C
30.00 F = -1.11 C
40.00 F = 4.44 C
50.00 F = 10.00 C
60.00 F = 15.56 C
70.00 F = 21.11 C
80.00 F = 26.67 C
90.00 F = 32.22 C
100.00 F = 37.78 C