计蒜客|C++程序设计|二维数组

#include<iostream>
using namespace std;
int main(){
int arr[2][3],arr2[3]={0,0,0};
int i,j;
for(i=0;i<2;i++){
for(j=0;j<3;j++){
cin>>arr[i][j];
arr2[j]+=arr[i][j];
}
}
cout<<arr2[0]<<" "<<arr2[1]<<" "<<arr2[2]<<endl;
return 0;
}