Operator Precedence :

The order of precedence in C++ language is as follows :

• Any expression given in parentheses is evaluated first.
• Then multiplication *  and division / operators are evaluated.
• Then plus +  and minus - operators are evaluated.
• In case of parentheses within parentheses, the expression of the inner parentheses will be evaluated first.

Example :

            The expression 5 * (4 / (5 - 1 ) ) + 3 is evaluated in the following order :

1. First of all, the expression 5 - 1 will be evaluated. It gives a value 4.
2. Secondly, 4 will be divided by the result of last line i.e. 4 / 4 giving value 1.
3. Thirdly, 5 will be multiplied by 1 i.e. giving a result 5.
4. Finally, 5 will be added in 3 and the last result will be 8.