good knowledge with matlab & c++ and c#

my work in the solving the errors in the observation file for the GPS and other satellite
?️i have a matlab code which make some actions in observation file to solve errors
?️it make some processes can be conclude in two process
1-preprocessong stage
2-postprocessing stage
?️and i have a code written in c# doing preprocessing stage i need to add this stage to the matlab code
?️and another code written in c++ doing the same of all the matlab code do
i need to take one stage of it and adding it to the postproccing stage in the matlab code
?️then design a new interface of the new code which is conclude from the three codes which i explain