2d vector c++ declaration

vector< vector<int>> a(rows, vector<int> (cols));

Source: stackoverflow.com

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*/

Source: stackoverflow.com

Similar codes

31 votes69 views1 answer
When to use struct vs class c++
C++
0 vote116 views1 answer
How to create a min priority queue of pair of int, int
C++
4 votes106 views1 answer
Eosio multi index secondary index
C++
0 vote118 views1 answer
Haxelib install cpp
C++
0 vote120 views1 answer
C++ average
C++
267 votes94 views1 answer
Visual studio c++ compiler
C++
3 votes103 views1 answer
Initialzing a 2d vector in cpp
C++
0 vote120 views1 answer
How to declare an enum variable c++
C++
7 votes123 views5 answers
Sleep c++
C++
5 votes110 views2 answers
C++ break Statement
C++