Razor0109's questions

#include <QInputDialog>
#include <QPushButton>
#include <QGridLayout>

int main(int argc, char *argv[]) //window::connect
{

    QApplication app(argc, argv);
     QPushButton *button1 = new QPushButton("1");
     QPushButton *button2 = new QPushButton("2");
     QPushButton *button3 = new QPushButton("3");
     QPushButton *button4 = new QPushButton("4");
     QPushButton *button5 = new QPushButton("5");
     QPushButton *button6 = new QPushButton("6");
     QPushButton *button7 = new QPushButton("7");
     QPushButton *button8 = new QPushButton("8");
     QPushButton *button9 = new QPushButton("9");

     QWidget *window = new QWidget;
     QGridLayout *layout = new QGridLayout;
     QInputDialog *pq=new QInputDialog;
     layout->addWidget(pq);
     layout->addWidget(button1);
     layout->addWidget(button2);
     layout->addWidget(button3);
     layout->addWidget(button4);
     layout->addWidget(button5);
     layout->addWidget(button6);
     layout->addWidget(button7);
     layout->addWidget(button8);
     layout->addWidget(button9);

     QObject :: connect (button1,SIGNAL(clicked()), button1,SLOT(showMenu ()));



     window->setLayout(layout);
          window->show();

    return app.exec();

例如，如果我在类构造函数中为数组分配内存，是否可以稍后在没有构造函数外部的析构函数的情况下释放它？

class Myclass
{    
public:
    int* data;
    Myclass(int size)
    {    
        data = new int[size];
        cout << data << "конструктор вызвался";
        for (int i=0;i<size;i++)
        {
            data[i]=i;
        }
    }
};

char ch;    
cin.get(ch);    
cout << ch+1;   

为什么他会这么cout认为？如果没有。chint++ch