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

1 vote156 views1 answer
C++ multithreading
C++
1 vote165 views1 answer
Stack implementation using linked list in cpp
C++
2 votes127 views1 answer
Conditional cout in c++
C++
1 vote129 views1 answer
Get an array with c++
C++
23 votes127 views2 answers
What is c++ function
C++
0 vote124 views1 answer
Popualte an array c++
C++
0 vote135 views1 answer
How to declare a 2d boolean vector in c++
C++
1 vote137 views1 answer
Qt label set text color
C++
-1 vote136 views5 answers
C++ string split
C++
4 votes136 views3 answers
C++ how to get maximum value
C++