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3.4.5
Variables
A variable is a storage location and has an associated type. A variable
always contains a value that is assignment compatible with its type.
Moreover, every variable in a program must have a value before its value
is used.
3.5 Expressions
The precedence of expression operators is the same as the order of the major
subsections of this section, the highest precedence first. Within each subsection,
the operators have the same precedence. Left- or right-associative is specified in
each subsection for the operators discussed therein.
3.5.1
Primary Expressions
Primary expressions are identifiers, constants, strings, or expressions in
parentheses.
Primary-expression: Identifier-primary
| constant
| “true”
| ”false”
| “null”
| New-expression
| (Assignment-expression)
An identifier is a primary expression, provided that it has been suitably
declared as discussed below. Its type is specified by its declaration.
A constant is a primary expression, with either type int or type string.
New-expression is an initialization expression that declares the instance of
an array object.
A parenthesized assignment expression is a primary expression that
contains operators.
3.5.2
Multiplicative Operators
The multiplicative operators *, /, % group left-to-right.
Multiplication-expression:
Multiplication-expression * Postfix-expression
| Multiplication-expression / Postfix-expression
| Multiplication-expression % Postfix-expression