Write a C program to calculate the following Sum: Sum=1-x2/2! +x4/4!-x6/6!+x8/8!-x10/10........

#include<stdio.h>
 #include<conio.h>
 #include<math.h>
 main()
 {
 int x,fac,sum=1;
int range,cv,power;
pirntf(" Enter the value for x to print the sum value");
 scanf("%d",&x);

 again:
  printf(" Enter the value for the range of power & factorial");
 scanf("%d",&fac);
 if(fac%2!=0)
 {
  printf(" please enter an even number as the range");
  goto again;
 }
 else

  cvalue=1;
  for(power=0;power<=range;power+2);
  {
    for(fac=power;fac>=1;fac--)
    {
      fac*=fac
    }
    sum+=(pow(-1,cvalue)*pow(x,power))/fac;
    cvalue++;
  }
printf(" The sum value for x= %d is %d",x,sum);
}