小编Ren*_*pov的帖子

我有为ARMv5TE构建的Qt 4.4.3.我尝试将a转换double为QString:

#include <QtCore/QtCore>
#include <cmath>

int main(int argc, char** argv)
{
  const double pi = M_PI;
  qDebug() << "Pi is : " << pi << "\n but pi is : " << QString::number(pi, 'f', 6);
  printf("printf: %f\n",pi);

  return 0;
}  

但得到奇怪的输出:

Pi is :  8.6192e+97 
but pi is :  "86191995128153827662389718947289094511677209256133209964237318700300913082475855805240843511529472.0000000000000000"
printf: 3.141593

我如何获得正确的字符串？