title: How to reorder the C++ standard precedence of arithmetic operators, so that subtraction will have higher priority
body: <p>I want to make a calculator, which will ask u the precedence of arithmetic  operators.For example priority №1 for addition,№2 for division, №3 for subtraction, №4 for multiplication.
  The question is : Do i need to use to overload operators or just simply use parenthesis?</p>