# Answer to Question #2038 in MatLAB | Mathematica | MathCAD | Maple for Jayesh

Question #2038

Write a user-defined MATLAB function that takes one single-valued input argument and checks whether the input argument is divisible by 3. If the input argument is divisible by 3, the function should return 1; otherwise, it returns 0.

Expert's answer

Create a file "is_div.m" with the following contents:%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

function [res] = is_div(x)

if (rem(x,3)==0)

res=1;

else

res=0;

end;

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Then you can test this function by using the following commands:

>> is_div(45)ans =

1

>> is_div(34)ans =

0

function [res] = is_div(x)

if (rem(x,3)==0)

res=1;

else

res=0;

end;

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

Then you can test this function by using the following commands:

>> is_div(45)ans =

1

>> is_div(34)ans =

0

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