The Order of Precedence in C
Part of the Beginning C Programming For Dummies Cheat Sheet
The order of precedence determines which operators act upon a value first. When crafting statements, know the order of precedence to ensure that the program does what you intend.
|!||Unary||Logical not; associativity goes right to left|
|++ --||Unary||Increment, decrement, read from right to left|
|* / %||Math||Multiplication, division, modulo|
|+ –||Math||Addition, subtraction|
|<< >>||Binary||Shift left, shift right|
|< > <= >=||Comparison||Less than, greater than, less than or equal to, greater than or equal to|
|== !=||Comparison||Is equal to, not equal to|
|^||Binary||Exclusive or (XOR)|
|?:||Comparison||Weird if thing; associativity goes right to left|
|=||Assignment||Variable assignment operator, including the +=, *=, and all assignment operators|
|,||(None)||The comma separates items in a for statement; precedence from left to right|
The order of precedence can be overridden by using parentheses. Simply enclose within a set of parentheses the part of the equation that you want executed first. That part is executed first no matter what the priority is.