OLLLLLLLLLLLLLLLLLLLLLLLLL

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

unsigned long fak(unsigned long f)
{
    if ( f == 0 )
        return 1;
    return(f * fak(f - 1));
}



int main(){

	int n =4;
	int x =4;
	double sum = 0.0;
	for(int i = 0; i<=n ; i++){
		//sum += pow(-1,i)*(pow(x,(2*i+1))/fak(2*i+1));
		sum += pow(-1.0,i)*((pow(x,((2*i)+1))/fak(((2*i)+1))));
	}
	printf("Sin(%lf) = %lf",x,sum);


	return 0;
}