how to take input in 2d vector in c++ code example

Example 1: how to get size of 2d vector in c++

myVector[
  Vector[0, 4, 2, 5],
  Vector[1, 4, 2]
];

/*When you call for myVector[1].size() it would return 3 and [0] would return 4.

For the amount of rows (int vectors) in the 2d vector, you can just use myVector.size()

You can run this to see it in actions*/

Example 2: initialising 2d vector

// Initializing 2D vector "vect" with 
// values 
vector > vect{ { 1, 2, 3 }, 
                           { 4, 5, 6 }, 
                           { 7, 8, 9 } };

Example 3: how to take input in 2d vector in c++

std::vector> d;
//std::vector d;
cout<<"Enter the N number of ship and port:"<>in;
cout<<"\Enter preference etc..:\n";
for(i=0; i>temp;
    d[i].push_back(temp); 
    }
}

Example 4: how to take input in 2d vector in c++

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

Example 5: input 2d vector c++

vector > d;
int val;
for(int i = 0; i < in; i++){
    vector temp;
    for(int j = 0; j < in; j++){
        cin >> val;
        temp.push_back(val);
    }
    d.push_back(temp);
    temp.clear();
}

Example 6: input 2d vector c++

vector > d;
int val;
for(int i = 0; i < in; i++){
    vector temp;
    for(int j = 0; j < in; j++){
        cin >> val;
        temp.push_back(val);
    }
    d.push_back(temp);
    temp.clear();
}
From SpyrosD3v25