字符串的格式化方式

1. QString字符串格式化方法如下

QString i = "iTest";           // current file's number  
QString total = "totalTest";       // number of files to process  
QString fileName = "fileNameTest";    // current file's name  
  
QString status = QString("Processing file %1 of %2: %3")  
                .arg(i).arg(total).arg(fileName);  
 style="background-color: #ffffff;">     qDebug() << status ;</span>