Length of 2d array c++

How to find 2d vector length cpp

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

Length of 2d array c++

int rows = sizeof(arr) / sizeof(arr[0]); // returns rows
int col = sizeof(arr[0]) / sizeof(int); // returns col

Size of a matrix c++

std::vector< std::vector<int> > my_array; /* 2D Array */

my_array.size(); /* size of y */
my_array[0].size(); /* size of x */

Source: stackoverflow.com

Similar codes

3 votes282 views2 answers
Find kth max and min element in an array
C++
0 vote309 views1 answer
Can derived class access base class non-static members without object of the base class
C++
2 votes287 views2 answers
2d array c++
C++
1 vote284 views1 answer
String c++ if letter or number
C++
0 vote291 views1 answer
Irremoteesp8266 example
C++
5 votes302 views2 answers
Vbs check if file exists
C++
-1 vote291 views1 answer
2927260.eps 2927262.jpg 2927263.ai License free.txt License premium.txt
C++
4 votes293 views2 answers
C++ inline if
C++
1 vote305 views1 answer
C++ inline in .cpp and not in header
C++
0 vote275 views2 answers
Use c++17 g++
C++