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std::stack::empty(3) C++ Standard Libary std::stack::empty(3) NAME std::stack::empty - std::stack::empty Synopsis bool empty() const; (until C++20) [[nodiscard]] bool empty() const; (since C++20) Checks if the underlying container has no elements, i.e. whether c.empty(). Parameters (none) Return value true if the underlying container is empty, false otherwise Complexity Constant Example // Run this code #include <algorithm> #include <iostream> #include <stack> int main() { std::cout << std::boolalpha; std::stack<int> container; std::cout << "Initially, container.empty(): " << container.empty() << '\n'; container.push(42); std::cout << "After adding elements, container.empty(): " << con- tainer.empty() << '\n'; } Output: Initially, container.empty(): true After adding elements, container.empty(): false See also size returns the number of elements (public member function) http://cppreference.com 2022.07.31 std::stack::empty(3)
NAME | Synopsis | Parameters | Return value | Complexity | Example | Output: | See also
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