Answers for "initialize 2d vector cpp"

initialize 2d vector of ints c++

auto M = 4;	// num of rows
auto N = 3; // num of cols in each row
auto default_value = 1; // default value of all int elements
std::vector<std::vector<int>> matrix(M, std::vector<int>(N, default_value));

initialzing a 2d vector in cpp

// Create a vector containing n row and m columns
  vector<vector<int> > vec( n , vector<int> (m, 0));

initializing 2d vector

vector<vector<int> > vec( n , vector<int> (m, 0));

size of a matrix using vector c++

// finding size of a square matrix
myVector[0].size();