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Initialization of a 3D vector with some value

2. Initialization of a 3D vector with given dimensions

Initialization of 3D vector with some value in this method we are creating a vector with x,y, and z dimensions with some value inside it.

Syntax:

vector<vector<vector<data_type>>> vector_name(x, vector<vector<data_type>>(y, vector<data_type>(z,value)));

Example:

C++




// C++ program to initialise
// 3D vector Initialization of
// 3D vector with some value
#include <iostream>
#include <vector>
using namespace std;
 
int main()
{
    // Initialising a 3D vector with 0 as initial value
    vector<vector<vector<int> > > v(
        2, vector<vector<int> >(3, vector<int>(4, 2)));
 
    // Printing the 3d vector
    for (int i = 0; i < v.size(); i++) {
        for (int j = 0; j < v[i].size(); j++) {
            for (int k = 0; k < v[i][j].size(); k++) {
                cout << v[i][j][k] << " ";
            }
            cout << endl;
        }
    }
 
    return 0;
}
 






                        









													
													
												

												
												

													
													
Output


2 2 2 2 
2 2 2 2 
2 2 2 2 
2 2 2 2 
2 2 2 2 
2 2 2 2 



													
													
												

												
												

													
													

													
													
												

												
												

													
													

													
													
												

												
												

													
													

													
													
												

												
											

											
											

												
How to Initialize 3D Vector in C++ STL?

												
												

													
													
Prerequisite: Vector in C++

													
													
												

												
												

													
													
Vectors in C++ are the same as arrays with dynamic sizes having the ability to resize themselves, we can insert and remove elements from the end. 

													
													
												

												
											

										


										
										

											
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												2. Initialization of a 3D vector with given dimensions