initialize 2D vector
vector
// Step 1: We include the necessary header file for vectors and iostream
include
include
// Step 2: We define the 2D vector and specify the data type (int in this case)
// vector
// Step 3: We can initialize the 2D vector with specified dimensions and initial values
// For example, we can initialize a 2x3 2D vector with all values set to 0
vector