initialize vector with elements c++ code example

Example 1: initialize 3d vector c++

vector<vector<vector<double>>> f(3, vector<vector<double>>(4, vector<double>(5)));

Example 2: initialise 2d vector in c++

// Initializing 2D vector "vect" with 
// values 
vector<vector<int> > vect{ { 1, 2, 3 }, 
                           { 4, 5, 6 }, 
                           { 7, 8, 9 } };