initialize vector c 2b 2b

1vector<vector<vector<double>>> f(3, vector<vector<double>>(4, vector<double>(5)));

1// CPP program to create an empty vector 
2// and push values one by one. 
3#include <vector>
4
5using namespace std;
6int main() 
7{ 
8    // Create an empty vector 
9    vector<int> vect;  
10    //add/push an integer to the end of the vector
11    vect.push_back(10); 
12	//to traverse and print the vector from start to finish
13    for (int x : vect) 
14        cout << x << " ";
15
16    return 0; 
17}

1// First include the vector library:
2#include <vector>
3
4// The syntax to create a vector looks like this:
5std::vector<type> name;
6
7// We can create & initialize "lol" vector with specific values:
8std::vector<double> lol = {66.666, -420.69};
9
10// it would look like this: 66.666 | -420.69

1 vector<int> arr(10,0);

1// CPP program to create an empty vector
2// and push values one by one.
3#include <bits/stdc++.h>
4using namespace std;
5
6int main()
7{
8	int n = 3;
9
10	// Create a vector of size n with
11	// all values as 10.
12	vector<int> vect(n, 10);
13
14	for (int x : vect)
15		cout << x << " ";
16
17	return 0;
18}
19

1std::vector<int> ints;
2
3ints.push_back(10);
4ints.push_back(20);
5ints.push_back(30);
6