#include <stdio.h>
#include <math.h>

int main()
{
   int x,n;
    printf("Enter: \n");
    printf("X :  ");
    scanf("\n %d",&x);
    printf("N :  ");
    scanf("\n %d",&n);
    int i,j;
    float sum=0;
    for(j=1; j<=n; j+=2)
    {
    int fact =1;
    for(i=1 ;i<j ; i++)
    {
            fact=fact * i ;
            }

               sum=sum +pow(x,j)/fact ;
    }
    printf (" SIN is : %f",sum);


    return 0;
}