How to Append an Item to a Vector in C++ - Step by Step Examples

How to Append an Item to a Vector in C++ ?

Answer

To append an item to a vector in C++, you can use the push_back() method provided by the std::vector class. This method allows you to add elements to the end of the vector dynamically.

✐ Examples

1 Append an Integer to a Vector

In this example,

First, include the <vector> header to use the vector class.
Next, declare a vector of the desired type using the std::vector class template.
Declare an integer variable to append to the vector.
Use the push_back() method on the vector to add the new integer to the end of the vector.
After appending the integer, you can verify that it has been added to the vector.

C++ Program

#include <iostream>
#include <vector>

int main() {
    std::vector<int> numbers;
    int newNumber = 10;
    numbers.push_back(newNumber);
    for (int i : numbers) {
        std::cout << i << " ";
    }
    std::cout << std::endl;
    return 0;
}

Output

2 Append a String to a Vector

In this example,

First, include the <vector> header to use the vector class.
Next, declare a vector of the desired type using the std::vector class template.
Declare a string variable to append to the vector.
Use the push_back() method on the vector to add the new string to the end of the vector.
After appending the string, you can verify that it has been added to the vector.

C++ Program

#include <iostream>
#include <vector>
#include <string>

int main() {
    std::vector<std::string> words;
    std::string newWord = "Hello";
    words.push_back(newWord);
    for (std::string word : words) {
        std::cout << word << " ";
    }
    std::cout << std::endl;
    return 0;
}

Output

Hello

Summary

In this tutorial, we learned How to Append an Item to a Vector in C++ language with well detailed examples.

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How to Append an Item to a Vector in C++ - Step by Step Examples

How to Append an Item to a Vector in C++ ?

Answer

✐ Examples

1 Append an Integer to a Vector

C++ Program

Output

2 Append a String to a Vector

C++ Program

Output

Summary

More C++ Vectors Tutorials