#include <iostream>
using namespace std;

int main()
{
    unsigned ui = 0U;
    unsigned long ul = 123UL;
    int i = 0;

    bool b;
    float f = 3;

    // i = rand() % f;                          // Error
    i = rand() % static_cast<int>(f);

    b = i < ul;                                 // Warning
    b = static_cast<unsigned long>(i) < ul;

    f = NULL;                                   // Warning
    f = static_cast<float>(NULL);

    enum color { red, white, blue };

    // Assign int value to enum variable
    // color hue = 1;						         // Error
    color hue = static_cast<color>(1);

    // Assign enum variable to int type
    i = hue;                                    // OK
    // Assign enum value to int type
    ui = white;								         // OK

    int* ptrI;
    // ptrI = &f;						               // Error
    // ptrI = static_cast<int*>(&f);            // Error
    ptrI = reinterpret_cast<int*>(&f);          // OK
}