sin x = x-x3 /3!+x5/5! -...........xn/n !

#include<stdio.h>
#include<math.h>
#include<conio.h>
void main()
{
int i, fact=1,sign=-1;
float x,numerator,sum,term;
clrscr();
printf("Enter an angle in degrees: ");
scanf("%f",&x);
x=x*3.14/180;
term=x;
sum=term;
for(i=3;term>=0.0000001;i=i+2)
{
    fact=fact*i*(i-1);
    numerator=pow(x,i);
    term=numerator/fact;
    sum=sum + sign * term;
    sign=sign*-1;
}
printf("The value of the series is:%f",sum);
}