X Q.What is the error in this program? int main0{int a;int ptr=&a;cout<<"enter an integer:";cin>>ptr;cout<<"you entered" <*ptr;Joutput: enter an integer: 100 You entered 100 Semicolon missing O Address operator missing none O Deference operator missing X Q.Which operator is having the highest precedence? Postfix increment Postfix Unary Prefix

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