C++ push_back Guide: Usage & Examples

1 year ago
Ava Mitchell
1 minute

In C++, push_back() is a member function used to add new elements to the end of a container. It is commonly used to add elements to a container, such as adding new elements to a vector.

Here is an example of using the push_back() function to add elements to a vector:

#include <iostream>
#include <vector>

int main() {
    std::vector<int> myVector;

    // 添加元素到vector中
    myVector.push_back(10);
    myVector.push_back(20);
    myVector.push_back(30);

    // 打印vector中的元素
    for (int i = 0; i < myVector.size(); i++) {
        std::cout << myVector[i] << " ";
    }

    return 0;
}

In the example above, we first create an empty vector called myVector, then use the push_back() function to add three integer elements to the vector. Lastly, we iterate through the vector using a for loop and print its elements. The output will be 10 20 30.

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