Program to display series 2,4,16,256... using while loop in C

#include
#include

int main()
{
    int n,x;  // declare the variable longdouble i=2;  //declare the variable of long double type
    clrscr();  
    printf("Enter the number : ");
    scanf("%d",&n);
    printf("\n");
    x=1;
    while(x<=n)   //  loop will be execute till the value of x I less or equal n
    {
        printf("%.2Lf\n",i);  // print the value of I upto 2 decimals only
        x++;
        i*=i;
    }
    getch();
    return 0;
}

Output:

Enter the number : 4

2.00
4.00
16.00
256.00