QByteArray QString QList zai

#include "myui.h"
#include <QApplication>
#include <QDebug>
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MyUi w;
    w.show();

    QByteArray  *aa=new QByteArray("haitao");
    aa->append(" hunk xu");  //后面添加字符串
    aa->prepend("i am "); //前面添加字符串
    qDebug() << *aa<<"  "<< aa->at(2) << "  " << aa->contains("hai");


    QString  ss ="kkkk";
    ss.append("mmmmm");
    ss.prepend("ffffff");
    qDebug()<<ss;

    QList<int>  listt;
    listt<<3<<5<<8;
    qDebug()<<listt.at(0);
    return a.exec();
}

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转载自blog.csdn.net/qq_15267341/article/details/88421625