Comma Operator : Lowest Precedence | Returns Righmost Operand

Comma Operator : Lowest Precedence | Returns Righmost

#include<stdio.h>
void main()
{
int a=1,b=2;
int k;
k = (a,b);
printf("%d",k);
}

1. Comma Operator has Lowest Precedence. [Priority] i.e evaluated at last .
2. Comma operator returns the value of the rightmost operand.
3. Comma Operator Can acts as -
   
   
   • Operator  : In the Expression
   • Separator : Declaring Variable , In Function Call Parameter List

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In the Above Example -
1 :  Comma as Seperator

int a=1,b=2;

It can acts as Seperator in -

• Function calls 
• Function definitions 
• Variable declarations 
• Enum declarations

2 : Comma as Operator

k = (a,b);

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Different Typical Ways of Comma as Operator :

int a=1,b=2,c;

Way 1 :

c = (a,b);

• c = Value Stores in b . = 2

Way 2 :

c = a,b;

• c = Value Stores in a . = 1
  

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Tags / Keywords : | comma Operator, Operator

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