C99 associativity for operators - where is it specified?

Question

In the C99 standard, the expressions allow for precedence and associativity.

Precedence is documented quite well since the order in which the operators appear in the

Answer 1

The grammar itself specifies associativity, by the productions used:

multiplicative-expression:
  cast-expression
  multiplicative-expression * cast-expression

This means that in a * b * c, c must be parsed as a cast-expression, and a * b as one multiplicative-expression, before further parsing of a * b itself. Thus the left-associativity of multiplication is forced into the syntax-tree by the parsing rules.