Kuis Pointer 1

void modify(int*& ptr) {
int local = 20;
ptr = &local;
}

int main() {
int x = 10;
int* p = &x;
modify(p);
cout << *p << endl; // Apa hasil ini?
}

• 20

• 10

int main() {
int arr[] = {10, 20, 30, 40};
int* p = arr + 2;
cout << (p++) << " " << (++p) << endl; // Apa hasil ini?
}

• 30 40

• 40 30

• 30 (angka acak)

• 40 (angka acak)

int main() {

int* p = nullptr;

if (p)

cout << "Not null";

else

cout << "Null";

}

• Not null

• Null

int main() {

int a = 10;

int* p1 = &a;

int*& ref = p1;

int b = 20;

ref = &b;

cout << p1 << " " << ref << endl;

}

• 20 10

• 10 10

• 10 20

• 20 20

int main() {

int x = 10;

int* p = &x;

delete p;

cout << x << endl;

}

• 10

• Compile error

int main() {

int arr[] = {1, 2, 3, 4, 5};

int* p = arr + 4;

cout << *(p - 2) << endl;

}

• 2

• 3

• 4

• Undefined (nilai gajelas)