Question

Please answer this using MATLAB (Not c or c++) and make sure to provide proper commenting:

a. Write a function that writes a series of random Fahrenheit temperatures and their corresponding Celsius temperatures to a tab-delimited le. Use 32 to 212 as your temperature range.
From the user, obtain the following:
1) The number of temperatures to randomly generate.
2) The name of the output file.

b. Write a function that reads a file produced by part (a). Focusing only on the Celsius temperatures in the le, calculate and display to screen the following:
1) Mean or Average
2) Minimum
3) Maximum

Answer 1

MATLAB Code:

(a)

File: randomTemperature.m

function randomTemperature()
    % Function that generates random Fahrenheit temperatures and converts and writes Celsius values to file
    fileName = input(" Please enter the name of your file: ");
    iterCnt = input(" Please enter the number of iterations: ");
  
    % Opening file for writing
    fileID = fopen(fileName,'w');
  
    % Min and Max range
    minRange = 32;
    maxRange = 212;
  
    % Printing header
    fprintf(fileID, " Fahrenheit Celsius");
  
    % Iterating over given number of iterations
    for i = 1:iterCnt
      
        % Generating Fahrenheit temperature
        fhTemp = minRange+rand(1)*(maxRange-minRange);
      
        % Converting into Celsius using conversion formula
       celTemp = ( (5/9.0) * ( fhTemp - 32.0 ) );
      
        % Writing to file
        fprintf(fileID, "\n %.2f \t %.2f ", fhTemp, celTemp);
  
    endfor
  
    % Closing file
    fclose(fileID);

endfunction

Sample Run:

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(b)

File: temperatureStatistics.m

function temperatureStatistics()
    % Function that reads Celsius temperatures and prints Average, max and min values
  
    % Opening file for reading
    fid = fopen("temperatures.txt", "r");

    % Reading header
    header = fgets(fid);
  
    % Reading values
    values = fscanf(fid, "%f");

    % Closing file
    fclose(fid);
  
    % Extracting Celsius values
    celsiusTemperatures = values(2:2:end);
  
    % Printing Statistics
    printf("\n Average Celsius Temperature: %.2f \n", mean(celsiusTemperatures) );
    printf("\n Minimum Celsius Temperature: %.2f \n", min(celsiusTemperatures) );
    printf("\n Maximum Celsius Temperature: %.2f \n", max(celsiusTemperatures) );

endfunction

Sample Run: