Arithmetic operators

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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)