Comma Operator

What Is Comma Operator?

The comma operator is used to separate two or more expression. Where first expression1 is evaluated, then expression2 is evaluated, and the value of expression2 is returned for the whole expression.

#include <stdio.h> //header file section
int main() //main section
{
int a=5, b=10;
if(a>b,a<b)
printf("if condition executes");
else
printf("else condition executes");
return 0;
}

Comma Operator Priority

Comma operator has the lowest priority among all the operators.

Comma Operator In printf

Here is an example program where comma operator get used in printf statement.

#include <stdio.h> //header file section
int main() //main section
{
printf("Addition of 4 + 4 is %d ", 4+4);
return 0;
}

Comma Operator In scanf

Here is an example program where comma operator get used in scanf statement.

#include <stdio.h> //header file section
int main() //main section
{
int num;
printf("Enter a number : ");
scanf("%d",&num);
printf("you entered %d",num);
return 0;
}

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