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function [y] = DivisibleTest(M)

for m = 1 : length(M)

if mod(M(m),2)==0

y = ["%d is divisible by 2",m,num2str(M)];

elseif mod(M(m),3)==0

y = ["%d is divisible by 3",m,num2str(M)];

elseif mod(M(m),2)==0 && mod(M(m),3)==0

y = ["%d is divisible by 2 AND 3",m,num2str(M)];

else

y = ["%d is NOT divisible by 2 or 3",m,num2str(M)];

end

end

end

KSSV
on 21 Nov 2020

It looks like you have opened the function and run the code by pressing F5 key or run button in the editor. This is not the way to call a function. You need to call the function either in the command window or in the script with proper input values.

Call the function in the command window s shwon below.

M = 10 ; % your input

y = DivisibleTest(M) ;

y

Geoff Hayes
on 21 Nov 2020

Muhammed - from the function signature

function [y] = DivisibleTest(M)

when calling this function, you need to provide an input parameter for M. I suspect that you are either running this code from the (MATLAB) File Editor, or are calling this function from the command line like

>> DivisibleTest

You need to call this function with an input like

>> DivisibleTest(42) % or whatever input you wish

Steven Lord
on 21 Nov 2020

Edited: Steven Lord
on 21 Nov 2020

Others have commented on the fact that you need to call your function with an input argument. I want to point out a different problem that you have. One of your lines of code is unreachable. When you have code that looks like:

if condition1

doA

elseif condition2

doB

elseif condition3

doC

else

doD

end

exactly one of doA, doB, doC, and doD will execute. Even if something that satisfies condition 3 also satisfies condition 1, doA and doC will not both execute. If anything that satisfies condition 3 also satisfies condition 1 but not the reverse, you should check for condition 3 first.

if x < 3

disp('x is less than 3')

elseif x < 5

disp('x is less than 5')

elseif x < 10

disp('x is less than 10')

else

disp('x is greater than or equal to 10')

end

Try defining x to have various values between say 1 and 20 and run that example then do the same for the following example:

if x < 10

disp('x is less than 10')

elseif x < 5

disp('x is less than 5')

elseif x < 3

disp('x is less than 3')

else

disp('x is greater than or equal to 10')

end

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