A simple 2D vector can be initialized with preset values using fill constructor.

{% highlight cpp %} int xdim = 5; int ydim = 4;

vector > container(xdim, vector(ydim, "1"));

for(int x=0; x<xdim; x++) { for(int y=0; y<ydim; y++) { cout << container[x][y] << " "; } cout << endl; } {% endhighlight %}

This will result in a 5x4 vector of strings with "1" in each cell.

{% highlight cpp %} 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 {% endhighlight %}

Similarly, a 3D vector can also be initialized like the following.

{% highlight cpp %} int xdim = 5; int ydim = 4; int zdim = 3;

vector > > container( xdim, vector >( ydim, vector(zdim, "0") ) );

for(int x=0; x<xdim; x++) { for(int y=0; y<ydim; y++) { cout << "["; for(int z=0; z<zdim; z++) { cout << container[x][y][z]; } cout <<"] "; } cout << endl; } {% endhighlight %}

This will result in a 5x4x3 vector of strings with "0" in each cell.

{% highlight cpp %} [000] [000] [000] [000] [000] [000] [000] [000] [000] [000] [000] [000] [000] [000] [000] [000] [000] [000] [000] [000] {% endhighlight %}