Write a program to evaluate the function to 0.00001 accuracy cosx=1-x^2/2!+x^4/4!-x^6/6!...............................

#include <stdio.h>

#include <conio.h>

#include <math.h>

void main(void)

{

  int i,j,n,factorial,sign;

  double a,sum=0,x,term;

  printf("Enter the value of x in degrees:=\n\t\t");

  scanf("%lf",&x);

  x=3.142*x/180.0;

  printf("Enter the no of terms:=  ");

  scanf("%d",&n);

  for(i=1;i<=n;++i)

   {

       for(factorial=1,j=1;j<=2*(i-1);++j)

       factorial*=j;

       sign=pow((-1),i+1);

      a=pow(x,2*(i-1))/(double)factorial;

      if(a<=.0001)

       break;

      term=sign*a;

      sum+=term;

  }

 printf("cos(%.4lf)=%lf",x,sum);

 getch();

 }