下面代码没有语法错误。

struct GameCharacter {
    string name;
    int level;
    float position_x;
    float position_y;   
    struct Equipment {
        string weapon;
        int attack_bonus;
        int defense_bonus;
    } equipment;
    struct Skill {
        string name;
        int damage;
    } skills[8];
    int skill_count;
};