Random number in Qt

rand.cpp

#include <QGlobal.h>
#include <QTime>

int QMyClass::randInt(int low, int high)
{
    // Random number between low and high
    return qrand() % ((high + 1) - low) + low;
}

// Create seed for the random
// That is needed only once on application startup
QTime time = QTime::currentTime();
qsrand((uint)time.msec());
//qsrand(QTime(0,0,0).secsTo(QTime::currentTime()));

// Get random value between 0-100
int randomValue = randInt(0,100);

Or you can use QRandomGenerator::global()->generate() since Qt 5.10.