Write a program to write a temperature conversion chart to a file. The main script will:

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Ch6Ex20.m

% Writes a temperature conversion chart to a file

% Explain the program

explainTemp

% Prompt the user for min and max F temps

[tmin, tmax] = tempMinMax;

% Write the F temps and corresponding C temps to file

fandCTemps(tmin, tmax)

explainTemp.m

function explainTemp

% Explains that the program will write a temperature

% conversion chart from F to C to a file

fprintf('This program writes a temperature conversion')

fprintf(' chart to a file fcchart.dat.\n')

fprintf('\nIt prompts the user for a minimum and maximum')

fprintf(' temp in degrees F\n')

fprintf('It writes the F temps from min to max in one')

fprintf(' column\n and correspoding C temps in another\n')

end

tempMinMax.m

function [tmin, tmax] = tempMinMax

% Prompts the user for min and max F temps

% and makes sure min < max

% Format of call: tempMinMax or tempMinMax()

% Returns min and max temperatures in F

tmin = input('Enter the minimum F temp: ');

tmax = input('Enter the maximum F temp: ');

if tmin > tmax

 [tmin, tmax] = swap(tmin, tmax);

end

end

function [outa, outb] = swap(ina, inb)

% swaps the values of arguments

% Format of call: swap(a,b)

% Returns b then a

outa = inb;

outb = ina;

end

fandCTemps.m

function fandCTemps(tmin, tmax)

% Writes the F and C temps to a file

% Format of call: fandCTemps(min temp, max temp)

% Does not return any values

f = tmin:tmax;

c = (f-32)*5/9;

mat = [f;c]';

save fcchart.dat mat -ascii

end

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