Vector 2D
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//LEARN VECTOR
//https://www.geeksforgeeks.org/2d-vector-in-cpp-with-user-defined-size/
#include <iostream>
#include <vector> // for 2D vector
using namespace std;
int main()
{
// Initializing 2D vector "vect" with
// values
vector<vector<int> > vect{ { 1, 2 },
{ 4, 5, 6 },
{ 7, 8, 9 } };
// Displaying the 2D vector
for (int i = 0; i < vect.size(); i++) {
for (int j = 0; j < vect[i].size(); j++)
{
cout << vect[i][j] << " ";
//cout << "vect.size(): " << vect.size() << endl; //num of rows
//cout << "vect[i].size(): " << vect[i].size() << endl; //num of column
}
cout << endl;
}
return 0;
}
Cpp
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