Problem with '<<'

[style]

Hi, I've this code and I don't know how fix the Error: Member function must be called or its address taken in function main():

#include <iostream>
#include <fstream>
#include <ostream>

using namespace std;
     
struct box { 
     high;
     width;
     diagonal;
};

int main() {
int i;
int j;
box make[8][8];  
ofstream thing ("sample.xxx", ios::out | ios::binary); 
    
thing.write <<  make[i][j] = 128;    // Here is error
    
}

plz.help.me