The dimension of “temp” in your code is fixed as “N” is statically defined to be 7. Therefore, when the C code is generated using MATLAB coder it optimizes the code and generates code for a fixed size array. To explicitly define variable-size data, use the function “coder.varsize” and you can take N as an input in your main script. Below is an example code snippet to achieve this –
function res = callFoo(N)
%#codegen
temp=ones(N,1);
coder.varsize('temp', [10 1], [1 0]); % only the first dimension is variable with upper bound of 10
res=foo(N,temp);
end
To learn more about code generation for variable sized arrays please refer to the following documentation - https://www.mathworks.com/help/simulink/ug/what-is-variable-size-data.html
