动态内存分配

#include <iostream>using namespace std;int main(){int *p;int n;cout << "input a num" << endl;cin >> n;p = new int[n];cout << "input" << n << "num" << endl;for (int i=0; i<n; i++)cin >> p[i];for (int j=0; j<n; j++)cout << p[j] << endl;delete[] p;p = NULL;return 0;}