#include <stdlib.h>
#include <time.h>//用到了time函数
int main()
{ int i,number
srand((unsigned) time(NULL))//用时间做种,每次产生随机数不一样
for (i=0i<50i++)
{
number = rand() % 101 //产生0-100的随机数
printf("%d ", number)
}
return 0
}
case QImage::Format_RGB32:case QImage::Format_ARGB32:
case QImage::Format_ARGB32_Premultiplied:
for(int i = 0i <heighti ++)
{
const QRgb *pSrc = (QRgb *)image.constScanLine(i)
uchar *pDest = (uchar *)ret.scanLine(i)
for( int j = 0j <widthj ++)
{
pDest[j] = qGray(pSrc[j])
}
}
break
}
return ret
}