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c instruction

         Hierarchy operation

  

if we use two or more operator in arithmetic instruction than we use hierarchy operator problem . the priority or precedence in which the arithmetic operator are perform called hierarchy operations.
example:- 2*x-3*y , a/(b*c).


Associativity operators: - 

when an expression take two or more operator of same priority. Than the tie between them and we use associativity of the operator.

      associativity are to type:-
       1. left to right :- it means that the left operand must be unambiguous (non- confusing) .

2. right to left :- it mean the right operand must be unambiguous (non- confusing).

example:- a=3/2*5;


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