>>Exponentiation in fortran is right to left (but we do not have exponents in C#) - That's how it is defined
>
>Actuallt exponentiation is down to up.

No, it's up to down

http://mathforum.org/library/drmath/view/53887.html

We are used to this being true for addition and multiplication, but it 
is NOT TRUE of exponents; for that reason, it is important to include 
parentheses to clarify this, though by convention we take a^b^c to 
mean a^(b^c). 

.
    2
  3       9
2      = 2  = 512

>>Also C# and its old predecessor C - assignment is right to left
>>

>>int i, j, k;
>>i = j = k = 1;
>>
>>or
>>i = (j = (k = 1))) ;
>

>These are dangerious codes. Like puzzle... :)
>
>Actually I never trust left-to-right. They said us everytime "paranthesis are more secure.".


Whilst it is true that parentheses are more secure, there are times you will not use them.

a = b = c = 1;
a = b * c * d + 1;

The rules of precedence and associativity have been invented for us - humans - and by us. Without them, we would have to write fully parenthesized expressions every time;

a = (b = (c = 1)));
a = ((b * c) * d) + 1;