precedence rules and associativity Operator precedence. Operator precedence specifies the manner in which operands are grouped with operators. For example, 1 + 2 * 3 is treated as 1 + (2 * 3), whereas ...

Uses: Where the operator precedence is to be changed, or extra mathematical functions have to be implemented. (You can follow, SAMDOB instead of BODMAS, or any precedence you want.) Where operators, ...