A.7.6 Multiplicative Operators

The multiplicative operators *, /, and % group left-to-right.     multiplicative-expression:       multiplicative-expression * cast-expression       multiplicative-expression / cast-expression       multiplicative-expression % cast-expression The operands of * and / must have arithmetic type; the operands of % must have integral type. The usual arithmetic conversions are performed on the operands, and predict the type of the result. The binary * operator denotes multiplication. The binary / operator yields the quotient, and the % operator the remainder, of the division of the first operand by the second; if the second operand is 0, the result is undefined. Otherwise, it is always true that (a/b)*b + a%b is equal to a. If both operands are non-negative, then the remainder is non-negative and smaller than the divisor, if not, it is guaranteed only that the absolute value of the remainder is smaller than the absolute value of the divisor.