What is the wrong in below two codes ? And y the first code is giving out put as 3 ?What is the difference in these two program?

Question

#include<stdio.h>

int main()
{
int x = (1,2,3);
printf("%d",x);
return 0;
}
____________________________
#include<stdio.h>
int main()
{
int x = 1,2,3;
printf("%d",x);
return 0;
}

Answer 1

Thank you George...:)

Answer 2

A=(1,2,3,4,5,6,....10000) A will be the last value
A=1,2,3,...........10000; A will be the first value