C语言,从文件中读取数据给结构体变量赋值,不知道哪里错了

Question

#include
#include
#include
struct student {
int number;
}num;

int main()
{

struct student s1, *s2;
s2 = &s1;
FILE *fp = fopen("test.txt", "r");
fscanf(fp, "%d", s2->number);

return 0;

}

Answer 1

fscanf(fp, "%d", &(s2->number));