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#include <iostream>
using namespace std;
int main() {
// 20개 int할당
int *pa = new int[20];
for (int i = 0; i < 20; ++i) {
pa[i] = i;
}
for (int i = 0; i < 20; ++i) {
cout << pa[i] << ", ";
}
cout << endl;
// 할당 해제는 delete []로
delete [] pa;
}