C++ vector.push_back()

C++Beginner

Append an element to a vector.

When to use it

Use for dynamically sized sequences.

C++ · Editable example

#include <vector>
#include <iostream>
int main() { std::vector<int> v{1}; v.push_back(2); std::cout << v.size(); }

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Expected output

Common mistake and fix

push_back can invalidate iterators when storage reallocates.

Related concepts: vector, memory

Explain this code

Append an element to a vector.

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C++ vector.push_back()

When to use it

Expected output

Common mistake and fix

Explain this code

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