cppreference.com > C++ Operator Precedence ### C++ Operator Precedence The operators at the top of this list are evaluated first.
Precedence | Operator | Description | Example | Associativity
--- | --- | --- | --- | ---
1 | () [] -> . :: ++ -- | Grouping operator Array access Member access from a pointer Member access from an object Scoping operator Post-increment Post-decrement | (a + b) / 4; array[4] = 2; ptr->age = 34; obj.age = 34; Class::age = 2; for( i = 0; i < 10; i++ ) ... for( i = 10; i > 0; i-- ) ... | left to right
2 | ! ~ ++ -- - + * & (type) sizeof | Logical negation Bitwise complement Pre-increment Pre-decrement Unary minus Unary plus Dereference Address of Cast to a given type Return size in bytes | if( !done ) ... flags = ~flags; for( i = 0; i < 10; ++i ) ... for( i = 10; i > 0; --i ) ... int i = -1; int i = +1; data = *ptr; address = &obj; int i = (int) floatNum; int size = sizeof(floatNum); | right to left
3 | ->* .* | Member pointer selector Member pointer selector | ptr->*var = 24; obj.*var = 24; | left to right
4 | * / % | Multiplication Division Modulus | int i = 2 * 4; float f = 10 / 3; int rem = 4 % 3; | left to right
5 | + - | Addition Subtraction | int i = 2 + 3; int i = 5 - 1; | left to right
6 | << >> | Bitwise shift left Bitwise shift right | int flags = 33 << 1; int flags = 33 >> 1; | left to right
7 | < <= > >= | Comparison less-than Comparison less-than-or-equal-to Comparison greater-than Comparison geater-than-or-equal-to | if( i < 42 ) ... if( i <= 42 ) ... if( i > 42 ) ... if( i >= 42 ) ... | left to right
8 | == != | Comparison equal-to Comparison not-equal-to | if( i == 42 ) ... if( i != 42 ) ... | left to right
9 | & | Bitwise AND | flags = flags & 42; | left to right
10 | ^ | Bitwise exclusive OR | flags = flags ^ 42; | left to right
11 | | | Bitwise inclusive (normal) OR | flags = flags | 42; | left to right
12 | && | Logical AND | if( conditionA && conditionB ) ... | left to right
13 | || | Logical OR | if( conditionA || conditionB ) ... | left to right
14 | ? : | Ternary conditional (if-then-else) | int i = (a > b) ? a : b; | right to left
15 | = += -= *= /= %= &= ^= |= <<= >>= | Assignment operator Increment and assign Decrement and assign Multiply and assign Divide and assign Modulo and assign Bitwise AND and assign Bitwise exclusive OR and assign Bitwise inclusive (normal) OR and assign Bitwise shift left and assign Bitwise shift right and assign | int a = b; a += 3; b -= 4; a *= 5; a /= 2; a %= 3; flags &= new_flags; flags ^= new_flags; flags |= new_flags; flags <<= 2; flags >>= 2; | right to left
16 | , | Sequential evaluation operator | for( i = 0, j = 0; i < 10; i++, j++ ) ... | left to right