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

75 votes234 views6 answers
Conda list envs
C++
0 vote204 views1 answer
Pop back innstring
C++
2 votes211 views1 answer
Gcc run c++
C++
0 vote209 views1 answer
Implicit conversion casting
C++
1 vote224 views1 answer
Array sum in c++ stl
C++
0 vote216 views1 answer
Find subarray sum in c++
C++
1 vote198 views1 answer
C++ cout format
C++
0 vote213 views1 answer
Pointer address to string
C++
0 vote215 views1 answer
Compile c++ program
C++
3 votes174 views1 answer
Loop over multidimensional array c++
C++