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% EXAMPLE M-FILE SCRIPT
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% Inside a function file called f.m
%   function y = f(x)
%       y = sin(x);
% You can create other functions, each
% with their own files.
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% Clear screen
clc

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% Clear variable assignments
clear 

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% Input function name from user
% I am assuming you have more than 1 function
% M-File. See f.m above for example.
fname = input('Enter the function name: ', 's');

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% Input start value
x0 = input('Enter the starting value: ', 's');

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% Convert x0 string to double
% See HELP STR2DOUBLE and HELP STRFUN
% Use digits! No pi!
x0=str2double(x0);

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% Input stop value
xN = input('Enter the stopping value: ', 's');

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% Convert xN string to double
% See HELP STR2DOUBLE and HELP STRFUN
xN=str2double(xN);

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% Make a range of x values
x = linspace(x0,xN,100);

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% Compute the f(x) for each x value
y = feval(fname, x);

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% Plot the results
plot(x,y)


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% Sample session:
% >> example
% (screen clears)
% Enter the function name: f      
% Enter the starting value: 0      
% Enter the stopping value: 3.1416
% >>   
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