4.3.3 int operations

++

changes its operand to its successor, is itself no int expression

--

changes its operand to its predecessor, is itself no int expression

+

addition

-

negation or subtraction

*

multiplication

/

integer division (omitting the remainder), rounding toward 0

div

integer division (omitting the remainder >= 0)

%

integer modulo (the remainder of the division /)

mod

integer modulo (the remainder of the division div), always non-negative

^, **

exponentiation (exponent must be non-negative)

<, >, <=, >=, ==, <>

comparison

Note: An assignment j=i++; or j=i--; is not allowed, in particular it does not change the value of j, see Limitations.

Example:

  int i=1;
  int j;
  i++; i;  i--; i;
→ 2
→ 1
  // ++ and -- do not return a value as in C, can not assign
  j = i++;
→ // ** right side is not a datum, assignment ignored
  // the value of j is unchanged
  j; i;
→ 0
→ 2
  i+2, 2-i, 5^2;
→ 4 0 25
  5 div 2, 8%3;
→ 2 2
  -5 div 2, -5 / 2, -5 mod 2, -5 % 2;
→ -3 -2 1 -1
  1<2, 2<=2;
→ 1 1