Use parentheses to explicitly force the order of expression evaluation. The following expression does not use parentheses to group operands and operators. The parentheses surrounding weight , zipcode are used to form a function call. Note how the compiler groups the operands and operators in the expression according to the rules for operator precedence and associativity:
The following expression is similar to the previous expression, but it contains parentheses that change how the operands and operators are grouped:
x = f + (g + h);