C++ Vector Operation Add Element

To add an element to a C++ vector, you can follow these steps:

  1. Declare a vector variable: Start by declaring a vector variable of the desired type. For example, if you want to create a vector of integers, you can declare it like this: cpp std::vector<int> myVector;

  2. Add elements using push_back(): To add elements to the vector, you can use the push_back() function. This function appends a new element to the end of the vector. For example, to add the value 5 to the vector, you can use the following code: cpp myVector.push_back(5);

  3. Repeat step 2 as needed: You can repeat step 2 to add more elements to the vector. For example, to add the values 10, 15, and 20 to the vector, you can use: cpp myVector.push_back(10); myVector.push_back(15); myVector.push_back(20);

  4. Access and use the elements: After adding elements to the vector, you can access and use them as needed. You can access individual elements using the subscript operator []. For example, to access the first element of the vector, you can use: cpp int firstElement = myVector[0];

Note: Remember that the index of the first element is 0, not 1.

You can also use loops to iterate over the elements of the vector. For example, you can use a for loop to print all the elements of the vector: cpp for (int i = 0; i < myVector.size(); i++) { std::cout << myVector[i] << " "; }

This will output: 5 10 15 20.

By following these steps, you can add elements to a C++ vector and perform operations on them as needed.