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

2 votes245 views1 answer
Std string to const char * c++
C++
0 vote252 views1 answer
Static_cast c++
C++
0 vote241 views1 answer
How to play sound in c++
C++
0 vote229 views1 answer
"how we write a program for" time swap" in c plus plus only with string"
C++
6 votes263 views2 answers
Create dynamic array c++
C++
1 vote236 views1 answer
C++ cout format
C++
0 vote242 views1 answer
Vermífugo significado
C++
0 vote231 views1 answer
C plus plus hello world
C++
0 vote239 views1 answer
Macro c++
C++
1 vote257 views1 answer
C++ functions inside functions
C++