sqlite数据库的有关问题

sqlite数据库的问题
#include <QtCore/QCoreApplication>
#include <QtSql>

int main(int argc, char *argv[])
{
  QCoreApplication a(argc, argv);

  QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
  db.setDatabaseName("/mnt/sdcard/test.db");
  if(!db.open())
  {
  return false;
  }
  printf("open OK\n");


  QSqlQuery query;
  query.exec("creat table student(id int primary key,name varchar)");

  query.exec("insert into student values(1,'xiaofang')");
  query.exec("insert into student values(2,'xiaohu')");
  query.exec("insert into student values(3,'xiaozhu')");

  query.exec("select id from student where id >=2");

  printf("mark1\n");
  while(query.next())
  {
  int ele0 = query.value(0).toInt();
  QString ele1=query.value(1).toString();
  qDebug() << ele0 <<ele1;
  printf("\n%s\n",ele0);
  printf("\n%s\n",ele1);
  printf("mark2\n");
  }
  printf("mark3\n");
  return a.exec();
}

以上是我按照网上的例子的代码，运行后发现没有进while()循环，生成了test.db的文件，可是大小为0 K字节？请问是什么原因呢？代码不知道是不是正确的，帮忙看看！

------解决方案--------------------
query.exec("creat table student(id int primary key,name varchar)");

create，错误是这。