Print 2d vector c++

	for(int i=0; i<v.size(); i++) 
		for(int j=0; j<v[i].size(); j++) 
  			cout<<v[i][j]<<" ";
        cout<<endl;

Print 2d array c++

for( auto &row : arr) {
    for(auto col : row)
         cout << col << " ";
	cout<<endl; 
}

How to take input in 2d vector in c++

std::vector<vector<int>> d;
//std::vector<int> d;
cout<<"Enter the N number of ship and port:"<<endl;
cin>>in;
cout<<"\Enter preference etc..:\n";
for(i=0; i<in; i++){ 
cout<<"ship"<<i+1<<":"<<' ';
    for(j=0; j<in; j++){
    cin>>temp;
    d.push_back(temp);// I don't know how to push_back here!!
    }
}

Source: stackoverflow.com

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