How to cast the size_t to double or int C++

Question

My question is that

I have a size_t data, but now I want to convert it to double or int.

If I do something like

 size_t data = 99999999;
 in         


        

Answer 1

If your code is prepared to deal with overflow errors, you can throw an exception if data is too large.

size_t data = 99999999;
if ( data > INT_MAX )
{
   throw std::overflow_error("data is larger than INT_MAX);
}
int convertData = static_cast(data);