Thread: Variable function argument types

I was wondering if one could write a function that could accept one or the other variable type.

ex: I have 2 arrays, int** and double**, and a function

Code:

void PGMWrite(double** Matrix, int Matrix_dimension){.....}

is there any way to change the function to

Code:

void PGMWrite(int** Matrix || double** Matrix, int Matrix_dimension){.....}

and then have some sort of type identifier in the function that picks the correct section via an if loop? If so how, and how would I identify in the function if the input it type double or int?

O_o

You can't generally get parametric polymorphisms in portable, standard C; you can do some stuff with macros if your compiler has some flavor of `typeof', but that's abnormal, and I don't recommend it.

I'd recommend using inheritance polymorphisms, the C flavor, if you want to use the same function name.

Soma

Thank you all,

Having 2 different functions, one for int** and one for double** is a but bulky as the function would be exactly the same simply with a cast. So I think that rcgldr's follow up on laserlight's comment is a good one namely creating a function that takes either int** or double** with a null and then calls the approperiate cast for PGMwrite() or whatever the function might be.