Hi Vivek,
In order to provide customized inputs you need to change the input source blocks used in the model during simulation to Inports(say In1, In2 etc.) and then generate the code. Now when you look at the generated (model_name).c file you will be able to find the void (model_name)_step(void) function which is called at every time step and contains the main dynamics of the model. This is the function where you can read inputs from external sources at every time step and produce output.
In the (model_name).c you will notice input variables as test_U.In1, test_U.In2 etc. We can read inputs and display outputs in this function as shown below:
scanf("%lf %lf",&(test_U.In1),&(test_U.In2)); %% lf for double datatype
printf("Input: %lf %lf\n",test_U.In1,test_U.In2);
%% Model Dynamics(computations on test_U.In1,test_U.In2)
printf("Ouput: %lf\n",test_Y.Out1);
Now on compiling, buidling and finally running the executable it will prompt you to provide input for all the time steps in one go and once you give that, you will see the output as well.
Hope it helps!
