下面是给出这几个结构体的构造函数、析构函数和默认构造函数的示例:
struct st_answer_trueOrfalse {
bool banswer;
bool banswer_standard;
bool bret;
st_answer_trueOrfalse() : banswer(false), banswer_standard(false), bret(false) {}
};
struct st_answer_choose {
int banswer;
int banswer_standard;
bool bret;
st_answer_choose() : banswer(0), banswer_standard(0), bret(false) {}
};
struct st_answer_choose_multiple {
QList<QString> banswer;
QList<QString> banswer_standard;
bool bret;
st_answer_choose_multiple() : bret(false) {}
};
union st_subject_Type {
st_answer_trueOrfalse trueOrfalse;
st_answer_choose choose;
st_answer_choose_multiple choose_multiple;
// 析构函数(可选)
~st_subject_Type() {}
};
struct st_subject {
int subject_number;
int subject_itype;
QString subject_name;
st_subject_Type subject_Type;
QImage image;
int score;
// 默认构造函数
st_subject() : subject_number(0), subject_itype(0), score(0) {}
// 构造函数
st_subject(int number, int type, const QString& name, const QImage& img, int s)
: subject_number(number), subject_itype(type),
subject_name(name), image(img), score(s) {}
// 析构函数(可选)
~st_subject() {}
};
以上是基于 C++ 的示例代码,使用了成员初始化列表语法来初始化各个成员变量。根据实际需要可以对默认构造函数和析构函数进行扩展,以实现更复杂的逻辑。
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