How to

Question

How to make sizeof (dataInput); look at the number or text in dataInput and not the variable itself(4bytes)?

Edit:
I am trying to make:
sizeof (dataInput);
calculate the size of the data that the variable "writes"(e.g. :
int dataInput="int";
sizeof (dataInput); // size of int not dataInput.
Edit2.
dataInput is a string (e.g. int)

Answer 1

Sadly this is impossible in C++. The closest you can get is making a map of all types yourself and then look up the answer.

Answer 2

I don't think your question is clearly stated. please give an example or more info on what you are trying to accomplish. And the statement "4 bytes" at the end means what?

Answer 3

I think you want to print no.of items instead of variable size..

if it so...

for example
a[5]={1,2,3,4,5};
then try cout<<sizeof(a)/size of(a[1]);