Memory related question of c programming

(1) What will output:
void main()
{
int a=5,b=6,c=7;
printf(“%d,%d,%d”);
}
Ans:
Output: 7 6 5
Explanation:
Default sotrage class int a=5 is auto.Since it automatic variable it will create in the stack area.
It will store in the stack as

Stack always follows LIFO datastructure.
In the printf statement name of variable is not written explicitly.So default output will content of
Stack which