Creating array of data types

[Madhur]

Hi All,

I would like you help me in creating an array of data types.

I am interested in look at the the data type which looks like this

Array a[10]={int,float,char,int*..............................},

so that a[0] should return me int and a[1] should return me
float..which helps me in runtime type casting.

I do not know how to create such an array. If i create so what would
be the data type of "Array".
This is basically a variable to "data type" conversion.

Or is there any better way to do this.

Looking keenly for the response..

Regards,
Madhur

 

[Alf P. Steinbach]

* Madhur:

Hi All,

I would like you help me in creating an array of data types.

I am interested in look at the the data type which looks like this

Array a[10]={int,float,char,int*..............................},

so that a[0] should return me int and a[1] should return me
float..which helps me in runtime type casting.

C++ doesn't have such arrays. And type casting is Evil. So best advice
is: try to tell us about the real problem, not your imagined solution.

I do not know how to create such an array. If i create so what would
be the data type of "Array".
This is basically a variable to "data type" conversion.

Or is there any better way to do this.

Yes, certainly, but you haven't told what "this" -- the real problem
-- is. The imagined solution with silly-array is not the real problem.

Looking keenly for the response..

Try to post some code (preferably that compiles).

 

[Junhui Tong]

Hi All,

I would like you help me in creating an array of data types.

I am interested in look at the the data type which looks like this

Array a[10]={int,float,char,int*..............................},

There is a "variant" approach:

struct variant {
enum {vt_int, vt_float, vt_char, vt_intp, ...} type;
union {
int v_i;
float v_f;
char v_c;
int * v_ip;
// ...
};
};

then you can write code like this:
variant a[10];
a[0].type = vt_int; a[0].v_i = 4;
a[1].type = vt_char; a[1].v_c = 'f';
....