Thread: sizeof(String) returns 8/32 on two different compilers.

Hi, why the same code is having two different outputs (read it further):

Code:

#include<iostream>
#include<string>


using std::cin;
using std::cout;
using std::string;
using std::endl;


int main()
{
        string i;
        if(getline(cin,i))
        {
        cout<<sizeof(i)<<endl;
        }
        else
        cout<<"gone";
        return 0;
}

ideone gives 32: Is it in Bytes? Can it be possible
Centos gives 8