看了半天，才发现在倒数第四行代码少了个“=”号?

ADD MONEY

老师举个例子而已，++后就为201

printf("%s\n,%d\n",weapon_1.name,++weapon_1.atk); 改为 printf("%s\n %d\n",weapon_1.name,++weapon_1.atk); 即可

#include <stdio.h>

typedef struct weapon{
    // 这个地方这么定义
    char *name;
    int atk;
    int price;
}weapon_t;

int main()
{
    weapon_t weapon1;
    
    weapon1.name="tom";
    weapon1.atk = 100;
    weapon1.price = 200;
    printf("%s %d %d\n",weapon1.name,weapon1.atk,weapon1.price);
    
    return 0;
}