Precedence and Associativity of Operators in C | Expressions in C

Preview

Precedence and Associativity of Operators in C

Precedence is the priority assigned to operators. When more than one operator appears in an expression, they will be evaluated as per their precedence.

In expression 10+6/2, division operator (/) has more priority than addition operator (+), so 6/2 will be evaluated followed by adding 10 the the result of 6/2  i.e. 3.

Associativity is the way to specify the order when operators of same precedence appear in expression.



Table of Precedence and Associativity

Level OPERATORS ASSOCIATIVITY
1 (), [] Left to Right
2 !, ~, ++, –, Unary +, Unary -, *, &, (type), sizeof() ) Right to Left
3 *, /, % Left to Right
4 + , – Left to Right
5 << , >> Left to Right
6 <, <= , > , >= Left to Right
7 = =, != Left to Right
8 & Left to Right
9 ^ Left to Right
10 | Left to Right
11 && Left to Right
12  || Left to Right
13 ?: Right to Left
14 =, +=, -=, /=, *=, ^=, !=, ,=, >>= Left to Right
15 COMMA OPERATOR(,) Left to Right



 Best Books of C





Lesson tags: Associativity of operators in c, precedence of operators in C
Back to: C Programming Language