int main() {
    // const int myConst1;
    const int myConst1 = 100;
    const int myConst2 = 200;
    const int* pMyConst;

    // init integer
    myConst1 = 100;

    // init pointer
    pMyConst = &myConst2;

    // change pointer
    pMyConst = &myConst2;

    // change integer
    myConst2 = myConst2 + 5;

    // change integer using pointer
    *pMyConst = myConst1 + 1;

    int myInt_3;
    int myInt_4 = 400;
    int* const cpMyInt_3 = &myInt_3;

    // initialize the pointer
    int* const cpMyInt_4;
    int* const cpMyInt_4 = &myInt_4;

    // initialize integer
    myInt_3 = 300;

    // change the integer
    myInt_4 = myInt_4 + 5;

    // change integer using pointer
    *cpMyInt_3 = myInt_4;

    // change the pointer
    cpMyInt_3 = &myInt_4;
}