2d vector size c++

Create a 2D vector with a specific size in C++ using the following steps:

Step 1: Include the necessary library by adding #include <vector> at the beginning of your code.

Step 2: Declare and initialize the 2D vector with the desired size using the following syntax:

std::vector<std::vector<int>> myVector(rows, std::vector<int>(columns));

Replace rows with the number of rows and columns with the number of columns you want for the 2D vector.

This will create a 2D vector with the specified size, where myVector is the name of the vector, and int can be replaced with the desired data type.