include stdio include stdlib int main void int double sum slag 1e-4 pr

#include <stdio.h>
#include <stdlib.h>

int main(void)
{
    int n=1;
    double x,sum,slag,g,e=1e-4;
    
    printf("print -1<=x<=1\n");
    scanf("%lf", &x);
    g=-x*x;
    slag=g/2;
    sum=slag;
    if ((x<=1)&&(x>=-1))
    { 
          while(slag>e || slag<-e)            
    {
                         slag*=g/(++n);
                         sum+=slag;
                         }
  printf ("sum = %lf\n", sum);     
}