7 Expressions [expr]

The multiplicative operators *, /, and % group left-to-right.

The operands of * and / shall have arithmetic or unscoped enumeration type; the operands of % shall have integral or unscoped enumeration type.

The usual arithmetic conversions ([expr.arith.conv]) are performed on the operands and determine the type of the result.

The binary * operator indicates multiplication.

The binary / operator yields the quotient, and the binary % operator yields the remainder from the division of the first expression by the second.

If the second operand of / or % is zero, the behavior is undefined.

For integral operands, the / operator yields the algebraic quotient with any fractional part discarded;67 if the quotient a/b is representable in the type of the result, (a/b)*b + a%b is equal to a; otherwise, the behavior of both a/b and a%b is undefined.