有个莫名其秒的错误 有关链表的

#include<stdio.h>
#include<stdlib.h>

struct student
{
  struct student *prev;

  int stu_num;
  char *name;
  int code;
  int age;

  float math_score;
  float c_score;
  float chinese_score;
  float rank;
   
  struct student *next;
};

typedef struct student stu;

typedef stu *link;

link head==NULL,current==NULL;

程序老是提示 就是最后一行
cc -c -o process.o process.c
process.c:23:10: 错误： expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘==’ token

不要把等于==和赋值=的符号混淆起来
link head==NULL,current==NULL;改成link head=NULL,current=NULL;

吐血了。。。。。我还看了好一会呢，那为啥第二个==没有报错呢

都有错！