Precedence and Associativity Table

Table below shows the precedence and associativity of the operators available in C language. The operators in top rows have more precedence compared to the ones in bottom rows. Operators in same cell have same precedence.

Operator(s)	Description	Associativity
++ --	Post increment/post decrement operator	Left to right associativity
++ --	Pre-increment/pre-decrement operator	Right to left associativity
+ -	Unary plus/minus operator	Right to left associativity
! ~	Logical NOT/bitwise NOT operator	Right to left associativity
*	"Value at address" operator	Right to left associativity
&	"Address of" operator	Right to left associativity
sizeof	"Size of" operator	Right to left associativity
* / %	Multiplication/division/modulus operator	Left to right associativity
+ -	Addition/subtraction operator	Left to right associativity
<< >>	Bitwise left shift/bitwise right shift operator	Left to right associativity
< <=	"Less than"/"Less than or equal to" relational operator	Left to right associativity
> >=	"Greater than"/"Greater than or equal to" relational operator	Left to right associativity
== !=	"Equal to"/"Not equal to" relational operator	Left to right associativity
&	Bitwise AND operator	Left to right associativity
^	Bitwise XOR operator	Left to right associativity
|	Bitwise OR operator	Left to right associativity
&&	Logical AND operator	Left to right associativity
||	Logical OR operator	Left to right associativity
?:	Ternary conditional operator	Right to left associativity
=	Assignment operator	Right to left associativity
+= -=	Assignment with addition/subtraction	Right to left associativity
*= /= %/	Assignment with multiplication/division/modulus	Right to left associativity
<<= >>=	Assignment with bitwise left shift/bitwise right shift	Right to left associativity
&= ^= |=	Assignment with bitwise AND/bitwise XOR/bitwise OR	Right to left associativity

precedence - Associativity Examples

#include <stdio.h>
 
main()
{
   float a = 10;
   float b = 20;
   float c = 30;
   float d = 40;
   float e;
 
   e = a + b * c / d; 
   printf("Value of a + b * c / d is    : %f\n",  e );
 
   e = (a + b) * c / d;
   printf("Value of (a + b) * c / d is  : %f\n" ,  e );
 
   e = a + (b * c) / d;
   printf("Value of a + (b * c) / d is  : %f\n",  e );
 
   e = a + b * (c / d);    
   printf("Value of a + b * (c / d) is  : %f\n" ,  e );
  
   return 0;
}
 
Output:
 
Value of a + b * c / d is    : 25.000000
Value of (a + b) * c / d is  : 22.500000
Value of a + (b * c) / d is  : 25.000000
Value of a + b * (c / d) is  : 25.000000