How to suppress output of function when calling from another function?

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Patddy
Patddy 2015-8-19
编辑： Stephen23 2015-8-19
So I have EulerMethod which when called itself I want it print the table with x = and y =. But when I call EulerMethod from LeapfrogMethod I don't want the one line of x = and y= to be outputted - is there a way to do this? (not semi-colon)
EulerMethod.m
function [ matrix ] = EulerMethod( fun, initX, initY,...
steplength, maximum )
...
fprintf('x = %3g, y = %3g\n',matrix(J,1),matrix(J,2))
...
end
LeapfrogMethod.m
function [ matrix ] = LeapfrogMethod( fun, initX, initY,...
steplength, maximum )
...
euler = EulerMethod(f,x0,y0,h,h);
...
end

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Stephen23
Stephen23 2015-8-19
编辑：Stephen23 2015-8-19
Probably the easiest way of doing (almost) what you want is to use nargout. MATLAB uses this with several of their basic functions: when the function is called without any output arguments, then it simply prints to the command window, otherwise it returns only the output arguments. You can choose the logic yourself:
if nargout==0
fprintf(...)
end
For an example of this see calendar.

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