As well as the standard arithmetic operators (`) found in most
languages, C provides some more operators. There are some notable
differences with other languages, such as Pascal.
`

Assignment is = *i.e.* ; `ch` = `y';

Increment ++, Decrement which are more
efficient than their long hand equivalents, for example:- `x++` is faster
than `x=x+1`.

The `++` and ` operators can be either in post-fixed or pre-fixed.
With pre-fixed the value is computed before the expression is evaluated whereas
with post-fixed the value is computed after the expression is evaluated.
`

In the example below, `++z` is pre-fixed and the `w` is post-fixed:

`
`This would be equivalent to:

`
`The `% (modulus) operator only works with integers.
`

`
Division / is for both integer and float division. So be careful.
`

`
The answer to: is 1 even if is declared a float!!
`

`
RULE: If both arguments of are integer then do integer division.
`

`
So make sure you do this. The correct (for division) answer to the above is or or (better) .
`

`
There is also a convenient shorthand way to express computations in C.
`

`
It is very common to have expressions like: or
`

`
This can written in C (generally) in a shorthand form like this:
`

`
`

`
which is equivalent to (but more efficient than):
`

`
`

`
So we can rewrite as
`

`
and as .
`

`
NOTE: that means and NOT
.
`

`
`

Wed Sep 14 10:06:31 BST 1994