qt开发环境

#include <QCoreApplication>#include <iostream>using namespace std;/*struct*/class Student{//结构体成员默认public，类成员默认private//public://    string m_name;//    int m_age;public:    //构造函数    Student (string const& name, int age){        m_name = name;        m_age = age;    }    //成员函数    void setName(string const& name){        if(name != "威震天")            m_name = name;    }    void setAge(int age){        if(age > 0)            m_age = age;    }    void who(void){        cout << "我是 " << m_name << endl;        cout << "今年 " << m_age << endl;    }private:    //成员变量    string m_name;    int m_age;};int main(int argc, char *argv[]){    QCoreApplication a(argc, argv);    Student s1 ("大黄蜂", 233);    s1.who();//    s1.m_name = "ayumi";//    s1.m_age = 33;//    cout << s1.m_name << endl;//    cout << s1.m_age << endl;    s1.setName("救护车");    s1.setAge(33);    s1.who();    s1.setName("威震天");    s1.setAge(-99);    s1.who();    s1.setName("擎天柱");    s1.setAge(666);    s1.who();    Student* s2 = new Student("铁皮", 333);    s2->who();    delete s2;s2 = NULL;    Student sa[3] = {        Student("大黄蜂", 233),        Student("擎天柱", 233),        Student("铁皮", 233)    };    sa[0].who();    sa[1].who();    sa[2].who();    Student* ps = new Student[3]{        Student("大黄蜂", 888),        Student("擎天柱", 999),        Student("铁皮", 77)    };    ps[0].who();    ps[1].who();    ps[2].who();    delete[] ps;    ps = NULL;    return a.exec();}