MATLAB Programming

Function Arguments
end
% End nested function convert2Feet
function inches = convert2Inches(argsIn)
% Nested function that converts feet to inches and adds in
% optional INCHES argument.
inches = feet .* 12;
if argsIn == 3
inches = inches + varargin{2};
end
end % End nested function convert2Inches
feet = convert2Feet(nargin);
inches = convert2Inches(nargin);
meters = inches .* 2.54 ./ 100;
end % End primary function convert2meters
convert2meters(5)
ans =
8.0467e+003
convert2meters(5, 2000, 4.7)
ans =
8.6564e+003
Returning Modified Input Arguments
If you pass any input variables that the function can modify, you will need to
include the same variables as output arguments so that the caller receives
the updated value.
For example, if the function readText, shown below, reads one line of a file
each time is it called, then it must keep track of the offset into the file. But
when readText terminates, its copy of the offset variable is cleared from
memory. To keep the offset value from being lost, readText must return this
value to the caller:
function [text, offset] = readText(filestart, offset)
4-51