What will be the output of the following C++ code?

#include <iostream>
using namespace std;
int main()
 {
    char* buff;
    try 
    {
         buff = new char[1024];
         if (buff == 0)
           throw "Memory allocation failure!";
        else
           cout << sizeof(buff) << "Byte successfully allocated!"<<endl;
     }
    catch(char *strg)
    {
        cout<<"Exception raised: "<<strg<<endl;
     }
     return 0;
}