题解 | #创建二维动态数组#

#include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin>>n;
    int** a = new int*[n];
    for(int i = 0; i < n; i++)
    {
        a[i] = new int[n];
    }
    for(int i = 0; i < n; i++)
    {
        for(int j = 0; j < n; j++)
        {
            a[i][j] = i + j;
            cout << a[i][j] << " ";
        }
        cout << endl;
    }
    for(int i = 0; i < n; i++)
    {
        delete[] a[i];
    }
    delete[] a;
    return 0;
}