set of vectors c++

To create a set of vectors in C++, follow these steps:

1. Include the necessary header files: At the beginning of your code, include the necessary header files for using vectors and sets. This can be done using the #include directive. For example:

#include <vector>
#include <set>

1. Declare a vector: Declare a vector variable of the desired data type. For example, to create a vector of integers, use the following syntax:

std::vector<int> myVector;

1. Add elements to the vector: Use the push_back() function to add elements to the vector. For example:

myVector.push_back(10);
myVector.push_back(20);
myVector.push_back(30);

1. Declare a set: Declare a set variable to store the vectors. The set will automatically sort the vectors in ascending order. For example:

std::set<std::vector<int>> mySet;

1. Insert the vector into the set: Use the insert() function to insert the vector into the set. For example:

mySet.insert(myVector);

1. Accessing the set of vectors: You can iterate over the set using a range-based for loop to access each vector. For example:

for (const std::vector<int>& vec : mySet) {
    // Do something with vec
}

1. Accessing the elements of a vector: Inside the loop, you can access the elements of each vector using the usual array-like indexing. For example:

for (const std::vector<int>& vec : mySet) {
    for (int i = 0; i < vec.size(); i++) {
        int element = vec[i];
        // Do something with element
    }
}

That's it! You have now created a set of vectors in C++. Remember to include the necessary header files, declare a vector, add elements to the vector, declare a set, insert the vector into the set, and then iterate over the set to access the vectors and their elements.