Making a dynamic array that accepts any type in C

Question

I\'m trying to find a way to make a struct to hold a dynamic array that can work with any data type (Including user defined data types), so far this is what I came up with.<

Answer 1

Not bad. And I don't see any disadvantage. Just to explain another method, mostly common used in this case use union:

typedef union { int i; long l; float f; double d; /*(and so on)*/} vdata;
typedef enum  {INT_T,LONG_T,FLOAT_T, /*(and so on)*/} vtype;
typedef struct 
{
    vtype t;
    vdata data
} vtoken;
typedef struct
{
    vtoken *tk;
    size_t sz;
   size_t n;
} Vector;

So this is possible way. The enum of datatype, you can avoid with typedefs, but if you use mixed (ex: sum long, to double, to float and so on) you must use them, since int + double is not equal to double+int; This is also a reason, because is more easy to see unions do this job. You leave al the arithmetic rules untouched.