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Adding Vectors in C++

The C++ add two vectors by simply concatenating them using the + operator or by using the insert method or push_back method from the C++ Standard Library. Here are a few ways to add two vectors:

Method 1: Using the + Operator

C++
#include <iostream>
#include <vector>

int main() {
    std::vector<int> vector1 = {1, 2, 3};
    std::vector<int> vector2 = {4, 5, 6};

    // Concatenate vector2 to vector1 using the + operator
    std::vector<int> result = vector1 + vector2;

    // Print the result
    for (int value : result) {
        std::cout << value << " ";
    }
    std::cout << std::endl;

    return 0;
}

Method 2: Using the insert Method

C++
#include <iostream>
#include <vector>

int main() {
    std::vector<int> vector1 = {1, 2, 3};
    std::vector<int> vector2 = {4, 5, 6};

    // Insert the elements of vector2 into vector1
    vector1.insert(vector1.end(), vector2.begin(), vector2.end());

    // Print the result
    for (int value : vector1) {
        std::cout << value << " ";
    }
    std::cout << std::endl;

    return 0;
}

Method 3: Using the push_back Method

C++
#include <iostream>
#include <vector>

int main() {
    std::vector<int> vector1 = {1, 2, 3};
    std::vector<int> vector2 = {4, 5, 6};

    // Append the elements of vector2 to vector1 using push_back
    for (int value : vector2) {
        vector1.push_back(value);
    }

    // Print the result
    for (int value : vector1) {
        std::cout << value << " ";
    }
    std::cout << std::endl;

    return 0;
}

All of these methods achieve the same result, which is adding the elements of vector2 to vector1. You can choose the method that you find most convenient for your specific use case.

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