How can I suppress the output of another function that is called from my function?

I am trying to compile the roots calculated from a bisection method function and an incremental search method function. The output of nb from the incremental search function continually appears even when I suppress the incremental search function.

%my original function
function [X] = manyRoots(func,a,b,ns,tol)
%manyRoots: root location zeroes
%combines bisect and incsearch to detect roots when sign change occurs
%input:
%func = name of function
%xl = lower bound of the bracket
%xu = upper bound of the bracket
%ns = number of sub intervals
%tol = the desired tolerance
%output:
%roots = real roots
y = bisect(func,a,b,tol);

z = incsearch(func,a,b,ns);

[X]=[y,z];


end

I am trying to supress the nb from this function.

function xb = incsearch(func,xmin,xmax,ns)
% incsearch: incremental search root locator
% xb = incsearch(func,xmin,xmax,ns):
% finds brackets of x that contain sign changes
% of a function on an interval
% input:
% func = name of function
% xmin, xmax = endpoints of interval
% ns = number of subintervals (default = 50)
% output:
% xb(k,1) is the lower bound of the kth sign change
% xb(k,2) is the upper bound of the kth sign change
% If no brackets found, xb = [].
if nargin < 3, error('at least 3 arguments required'), end
if nargin < 4, ns = 50; end %if ns blank set to 50
% Incremental search
x = linspace(xmin,xmax,ns);
f = func(x);
nb = 0; xb = []; %xb is null unless sign change detected
for k = 1:length(x)-1
 if sign(f(k)) ~= sign(f(k+1)) %check for sign change
 nb = nb + 1;
 xb(nb,1) = x(k);
 xb(nb,2) = x(k+1);
 end
end
if isempty(xb) %display that no brackets were found
 disp('no brackets found')
 disp('check interval or increase ns')
else
 disp('number of brackets:') %display number of brackets
 disp(nb)
end

I am trying to suppress the number of brackets that shows up above my answer X.

Answer 1

[Sean de Wolski]

Easiest way would be to pass an optional flag into incsearch that specifies whether it should display or not.

function xb = incsearch(func,xmin,xmax,ns, verbose)
% incsearch: incremental search root locator
% xb = incsearch(func,xmin,xmax,ns):
% finds brackets of x that contain sign changes
% of a function on an interval
% input:
% func = name of function
% xmin, xmax = endpoints of interval
% ns = number of subintervals (default = 50)
% output:
% xb(k,1) is the lower bound of the kth sign change
% xb(k,2) is the upper bound of the kth sign change
% If no brackets found, xb = [].
arguments
    func
    xmin
    xmax
    ns = 50
    verbose = true
end
if verbose
    disp stuff

end