what is precedence rule in c language code example

Example: order of precedence of operators in c

Category	      Operator	                           Associativity
Postfix	          () [] -> . ++ - -	                   Left to right
Unary	          + - ! ~ ++ - - (type)* & sizeof      Right to left
Multiplicative	  * / %	                               Left to right
Additive	      + -	                               Left to right
Shift	          << >>	                               Left to right
Relational	      < <= > >=	                           Left to right
Equality	      == !=	                               Left to right
Bitwise AND     	&	                               Left to right
Bitwise XOR     	^                                  Left to right
Bitwise OR	        |	                               Left to right
Logical AND	        &&	                               Left to right
Logical OR	        ||	                               Left to right
Conditional	        ?:	                               Right to left
Assignment	        = += -= *= /= %=>>= <<= &= ^= |=   Right to left
Comma	            ,	                               Left to right