code for 123456789*123456789 is dis correct ?????????
#include<stdio.h>
void main()
{
int n;
long long double b,c,d=0;
int a[10]={1,2,3,4,5,6,7,8,9};
printf("enter a no:");
scanf("%d",&n);
for(i=0;i<=n;i++)
{
b=a[i]*a[i];
c=d+b;
d=c;
}
printf("%lld",d);
getch();
}