Arithmetic operators

From Cppreference

Returns the result of specific arithmetic operation.

Operator name	Syntax	Overloadable	Prototype examples (for class T)
Operator name	Syntax	Overloadable	Inside class definition	Outside class definition
unary plus	`+a`	Yes	T& T::operator+() const;	T& operator+(const T &a);
unary minus	`-a`	Yes	T& T::operator-() const;	T& operator-(const T &a);
addition	`a + b`	Yes	T& T::operator+(const T2 &b) const;	T& operator+(const T &a, const T2 &b);
subtraction	`a - b`	Yes	T& T::operator-(const T2 &b) const;	T& operator-(const T &a, const T2 &b);
multiplication	`a * b`	Yes	T& T::operator*(const T2 &b) const;	T& operator*(const T &a, const T2 &b);
division	`a / b`	Yes	T& T::operator/(const T2 &b) const;	T& operator/(const T &a, const T2 &b);
modulo	`a % b`	Yes	T& T::operator%(const T2 &b) const;	T& operator%(const T &a, const T2 &b);
bitwise NOT	`~a`	Yes	T& T::operator~() const;	T& operator~(const T &a);
bitwise AND	`a & b`	Yes	T& T::operator&(const T2 &b) const;	T& operator&(const T &a, const T2 &b);
bitwise OR	`a \| b`	Yes	T& T::operator\|(const T2 &b) const;	T& operator\|(const T &a, const T2 &b);
bitwise XOR	`a ^ b`	Yes	T& T::operator^(const T2 &b) const;	T& operator^(const T &a, const T2 &b);
bitwise left shift	`a << b`	Yes	T& T::operator<<(const T2 &b) const;	T& operator<<(const T &a, const T2 &b);
bitwise right shift	`a >> b`	Yes	T& T::operator>>(const T2 &b) const;	T& operator>>(const T &a, const T2 &b);
Notes All operators usually return a value of type T. However, essentially ny type can be returned (including void, i.e. no return value), yet this is unintuitive and thus defeats the purpose of the operators. `T2` can be any type including `T`

[edit] Explanation

All arithmetic operators compute the result of specific arithmetic operation and returns its result. The arguments are not modified.

[edit] See also

Operator precedence

Common operators
assignment	increment decrement	arithmetic	logical	comparison	member access	other
a = b a = rvalue a += b a -= b a *= b a /= b a %= b a &= b a \|= b a ^= b a <<= b a >>= b	++a --a a++ a--	+a -a a + b a - b a * b a / b a % b ~a a & b a \| b a ^ b a << b a >> b	!a a && b a \|\| b	a == b a != b a < b a > b a <= b a >= b	a[b] a &a a->b a.b a->b a.*b	a(...) a, b (type) a ? :
Special operators
`static_cast` converts one type to another compatible type `dynamic_cast` converts virtual base class to derived class `const_cast` converts type to compatible type with different cv qualifiers `reinterpret_cast` converts type to incompatible type `new` allocates memory `delete` deallocates memory `sizeof` queries the size of a type `sizeof...` queries the size of a parameter pack (C++11 feature) `typeid` queries the type information of a type `noexcept` checks if an expression can throw an exception (C++11 feature) `alignof` queries alignment requirements of a type (C++11 feature)