std::basic_...::push_back(3) C++ Standard Libary std::basic_...::push_back(3) NAME std::basic_string::push_back - std::basic_string::push_back Synopsis void push_back( CharT ch ); (constexpr since C++20) Appends the given character ch to the end of the string. Parameters ch - the character to append Return value (none) Complexity Amortized constant. Exceptions If the operation would result in size() > max_size(), throws std::length_error. If an exception is thrown for any reason, this function has no effect (strong exception safety guarantee). Example // Run this code #include <iomanip> #include <iostream> #include <string> int main() { std::string str{"Short string"}; std::cout << "1) " << std::quoted(str) << ", size: " << str.size() << '\n'; str.push_back('!'); std::cout << "2) " << std::quoted(str) << ", size: " << str.size() << '\n'; } Output: 1) "Short string", size: 12 2) "Short string!", size: 13 Defect reports The following behavior-changing defect reports were applied retroac- tively to previously published C++ standards. DR Applied to Behavior as published Correct be- havior (1) the description was missing in LWG 7 C++98 the C++ standard (1) description added (2) the parameter type was const (2) changed to CharT CharT LWG 847 C++98 there was no exception safety added strong ex- ception safety guarantee guarantee See also pop_back removes the last character (DR*) (public member function) http://cppreference.com 2024.06.10 std::basic_...::push_back(3)
NAME | Synopsis | Parameters | Return value | Complexity | Exceptions | Example | Output: | See also
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