#include<iostream>#include<vector>#include<string>using  namespace std;int main(){    int ia[3][4]={    {0,1,2,3},    {4,5,6,7},    {8,9,10,11}    };    for(int (*p)[4]=ia;p!=ia+3;++p)        for(int *q=(*p);q!=*p+4;++q)        cout<<*q<<‘ ‘;    cout<<endl;    for(int i=0;i<3;i++)        for(int j=0;j<4;++j)        cout<<ia[i][j]<<‘ ‘;    cout<<endl;    for(int (&i)[4]:ia)        for(int &j:i)        cout<<j<<‘ ‘;    cout<<endl;    return 0;}