c++ 输入n 输出n*n的数字矩阵 如 输入4输出 10 11 12 1 9 16 13 2 8 15 14 3 7

#include<iostream>using namespace std;int main(){int i,j,n;cin>>n;int **a=new int*[n];for(i=0;i<n;++i){int *b=new int[n];for(j=0;j<n;++j)cin>>b[j];a[i]=b;}cout<<"数组: "<<endl;for(i=0;i<n;++i){for(j=0;j<n;++j)cout<<a[i][j]<<" ";cout<<endl;}for(i=0;i<n;++i)//释放数组delete [] a[i];delete[] a;return 0;}