Thread: Loop and Array Program

I am having difficulty determining what is wrong with my code. This code is calculated the sin function without actually using the function.
Any help or advice?

Code:

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


double mysin(double* x, int* n){
    int j, i;
	int count=0;
	int factorial=1; 
	int addorsub=0;
	double sin=0;
	    for(j=1; j<= *n; j+=1){
		    if(j==1){
			   i=1;
			}
			else{
			   i=j*2-1;
			}
			factorial=1;
		if(addorsub==0){
		    for(count=1; count<=i; count+=1){
			    factorial*=count;
			}
		sin+=pow(*x,i)/factorial;
		addorsub+=1;
		}
		else{
		    for(count=1; count<=i; count+=1){
			    factorial*=count;
			}
			sin-=pow(*x,i)/factorial;
			addorsub-=1;
		}
		}
		return sin;
}




int main(){
    int x=0;
	double n=0;
	double computedsin;
	double actualsin;
	
	printf("Please input x and n:\n");
	scanf("%d %lf, &x, &n");
	
    computedsin=mysin(&n,&x);
	actualsin=sin(n);
	
	printf("mysin=%lf\n",computedsin);
	printf("Real Sin=%lf\n", actualsin);
	


}

I changed the name of sin and the program will still not run. Good catch though, I would have never thought of that.

THANK YOU! I see it!

Check out: help with factorials in sin approximation