Scope resolution operator and const

Question

Let\'s take the following code:

#include  // std::string    
using namespace std;
int main() {
  //const::int i = 42;       -> Error: \"expected         


        

Answer 1

::something tells the compiler to look for something in global namespace, but int is keyword (not defined anywhere), while string (resp. std::string) is class defined in so your code is equivalent to this one

#include  // std::string    
using namespace std;
int main() {
  //const ::int i = 42;       -> Error: "expected id-expression before 'int'"
  const ::string str = "Foo";
}