编译器错误 C2106 什么意思，为什么

Question

#include <iostream>
using namespace std;
int main() {
    int n, i=1;
    cout << n;
    while (i <= n) {
        int I=1,q=1;
        while (I <= n)
        {
            if(I=1||I=n)
            {
                cout << '*';
            }else{
                    cout << " ";
            }
        }
        i++;
    }return 0;
}

Answer 1