Hi friend,

Look at this below code snippet, it sure help you in understanding the differences :)

void Foo( int * ptr,
          int const * ptrToConst,
          int * const constPtr,
          int const * const constPtrToConst )
{
    *ptr = 0; // OK: modifies the pointee
    ptr = 0; // OK: modifies the pointer

    *ptrToConst = 0; // Error! Cannot modify the pointee
    ptrToConst = 0; // OK: modifies the pointer

    *constPtr = 0; // OK: modifies the pointee
    constPtr = 0; // Error! Cannot modify the pointer

    *constPtrToConst = 0; // Error! Cannot modify the pointee
    constPtrToConst = 0; // Error! Cannot modify the pointer
}

Regards,
S.Manivannan