how can I avoid the use of #if in a polymorphic print macro

Question

Let\'s try to run the following code:

#include 
#define MY_MACRO1(isArray,y) do { \\
                      if(isArray) \\
                                 


        

Answer 1

Is there anyway to call a #if statement inside a macro?

Not possible.

if not, how can I do such a thing?

You could use C11 _Generic:

#include 

void int_func (int obj)
{
  printf("%d\n", obj);
}

void int_arr_func (const int* obj)
{
  printf("%d\n", obj[0]);
}

void float_func (float obj)
{
  printf("%f\n", obj);
}

#define MY_MACRO2(y) _Generic((y), \
  int:   int_func,                 \
  int*:  int_arr_func,             \
  float: float_func ) (y)


int main (void)
{
    int a = 38;
    int b[]={42};
    float pi = 3.14f;

    MY_MACRO2(a);
    MY_MACRO2(b);
    MY_MACRO2(pi);
    return 0;
}