请问，我的这程序怎么报错了？

Question

#include<stdio.h>
#include<math.h>
int main()
{
 int i,p,n;
 i=1;
 p=1/n;
 n=2;
 do
 {
  while(n%2=0)                             //error C2106:'=':left operation must be l-value
  {
   p=-p;
  }
  i=i+p;
  n=n+1;
 }
 while(n>100);
 printf("total=%d\n",i);
 return 0;
}

Answer 1

while(n%2==0)   

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