#include <iostream>
#include <type_traits>
 
int main(int argc, const char *argv[])
{
    std::remove_pointer<const int>::type i0 = 10;   // ok. type is const int. must be initialized
    std::remove_pointer<const int *>::type i1 = 10; // ok. type is const int. must be initialized.
    std::remove_pointer<int const *>::type i2 = 10; // ok. type is const int. must be initialized.
    std::remove_pointer<int * const>::type i3;      // ok. type is int. no initialization needed
 
    return 0;
}
 

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