Function pointer to different functions with different arguments in C

Question

I have two functions with variable number and types of arguments

double my_func_one(double x, double a, double b, double c) { return x + a + b + c }
double my         


        

Answer 1

My question is, for this scenario, Can I at all define a function pointer?

No. (Other than by dirty typecasting.)

Is there any other way to do this?

Your best bet is to create a wrapper function for one of your existing functions. For example:

double my_func_one_wrapper(double x, double p[], double c) {
    return my_func_one(x, p[0], p[1], c);
}

That way, you have two functions with the same signature, and therefore the same function-pointer type.