QT中文件读写操作的问题

lcw0622 2012-01-03 01:53:39

QFile *arc=new QFile("d:\\arc.txt");

    arc->open(QIODevice::ReadWrite|QIODevice::Text);

    QTextStream in(arc);

    QTextStream out(arc);

    edge **matrix;



    QString number;

    int startTime[2];

    int arriveTime[2];

    int startCity;

    int arriveCity;

    int price;



    int i,j,k=8;

    in<<k<<endl;

    for(i=0;i<8;i++)

        in<<"1111"<<" "<<i<<" "<<i+1<<" "<<i+2<<" "<<i+3<<" "<<1<<" "<<2<<" "<<10<<"\n";

cout<<k;

        out>>k;//在用in写入后用out读出第一个数据

        for(i=0;i<8;i++)

        {

            out>>number>>startTime[0]>>startTime[1]>>arriveTime[0]>>arriveTime[1]>>startCity>>arriveCity>>price;

            cout<<number.toStdString()<<" "<<startTime[0]<<" "<<startTime[1]<<" "<<arriveTime[0]<<" "<<arriveTime[1]<<" "<<startCity<<" "<<arriveCity<<" "<<price<<endl;

        }



        

    return 0;

这样写生成的文件内容就没有格式，不是我想象中的一行一行的样子。而如果这样写

Q_DECL_EXPORT int main(int argc, char *argv[])

{

    QFile *arc=new QFile("d:\\arc.txt");

    arc->open(QIODevice::ReadWrite|QIODevice::Text);

    QTextStream in(arc);

    QTextStream out(arc);

    edge **matrix;



    QString number;

    int startTime[2];

    int arriveTime[2];

    int startCity;

    int arriveCity;

    int price;



    int i,j,k=8;

    in<<k<<endl;

    for(i=0;i<8;i++)

        in<<"1111"<<" "<<i<<" "<<i+1<<" "<<i+2<<" "<<i+3<<" "<<1<<" "<<2<<" "<<10<<"\n";

    arc->close();       //close一次后再打开

    arc->open(QIODevice::ReadOnly);

        out>>k;

        for(i=0;i<8;i++)

        {

            out>>number>>startTime[0]>>startTime[1]>>arriveTime[0]>>arriveTime[1]>>startCity>>arriveCity>>price;

            cout<<number.toStdString()<<" "<<startTime[0]<<" "<<startTime[1]<<" "<<arriveTime[0]<<" "<<arriveTime[1]<<" "<<startCity<<" "<<arriveCity<<" "<<price<<endl;

        }



        cout<<k;

    return 0;

}